"""Tests for multi-credential runtime pooling and rotation."""

from __future__ import annotations

import json
import time

import pytest


def _write_auth_store(tmp_path, payload: dict) -> None:
    hermes_home = tmp_path / "hermes"
    hermes_home.mkdir(parents=True, exist_ok=True)
    (hermes_home / "auth.json").write_text(json.dumps(payload, indent=2))


def test_fill_first_selection_skips_recently_exhausted_entry(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                        "last_status": "exhausted",
                        "last_status_at": time.time(),
                        "last_error_code": 402,
                    },
                    {
                        "id": "cred-2",
                        "label": "secondary",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "***",
                        "last_status": "ok",
                        "last_status_at": None,
                        "last_error_code": None,
                    },
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")
    entry = pool.select()

    assert entry is not None
    assert entry.id == "cred-2"
    assert pool.current().id == "cred-2"


def test_select_clears_expired_exhaustion(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "cred-1",
                        "label": "old",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                        "last_status": "exhausted",
                        "last_status_at": time.time() - 90000,
                        "last_error_code": 402,
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")
    entry = pool.select()

    assert entry is not None
    assert entry.last_status == "ok"


def test_round_robin_strategy_rotates_priorities(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    },
                    {
                        "id": "cred-2",
                        "label": "secondary",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "***",
                    },
                ]
            },
        },
    )
    config_path = tmp_path / "hermes" / "config.yaml"
    config_path.write_text("credential_pool_strategies:\n  openrouter: round_robin\n")

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    first = pool.select()
    assert first is not None
    assert first.id == "cred-1"

    reloaded = load_pool("openrouter")
    second = reloaded.select()
    assert second is not None
    assert second.id == "cred-2"


def test_random_strategy_uses_random_choice(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.delenv("OPENROUTER_API_KEY", raising=False)
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    },
                    {
                        "id": "cred-2",
                        "label": "secondary",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "***",
                    },
                ]
            },
        },
    )
    config_path = tmp_path / "hermes" / "config.yaml"
    config_path.write_text("credential_pool_strategies:\n  openrouter: random\n")

    monkeypatch.setattr("agent.credential_pool.random.choice", lambda entries: entries[-1])

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    selected = pool.select()
    assert selected is not None
    assert selected.id == "cred-2"



def test_exhausted_entry_resets_after_ttl(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "sk-or-primary",
                        "base_url": "https://openrouter.ai/api/v1",
                        "last_status": "exhausted",
                        "last_status_at": time.time() - 90000,
                        "last_error_code": 429,
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    entry = pool.select()

    assert entry is not None
    assert entry.id == "cred-1"
    assert entry.last_status == "ok"


def test_exhausted_402_entry_resets_after_one_hour(tmp_path, monkeypatch):
    """402-exhausted credentials recover after 1 hour, not 24."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                        "base_url": "https://openrouter.ai/api/v1",
                        "last_status": "exhausted",
                        "last_status_at": time.time() - 3700,  # ~1h2m ago
                        "last_error_code": 402,
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    entry = pool.select()

    assert entry is not None
    assert entry.id == "cred-1"
    assert entry.last_status == "ok"


def test_explicit_reset_timestamp_overrides_default_429_ttl(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    # Prevent auto-seeding from Codex CLI tokens on the host
    monkeypatch.setattr(
        "hermes_cli.auth._import_codex_cli_tokens",
        lambda: None,
    )
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openai-codex": [
                    {
                        "id": "cred-1",
                        "label": "weekly-reset",
                        "auth_type": "oauth",
                        "priority": 0,
                        "source": "manual:device_code",
                        "access_token": "tok-1",
                        "last_status": "exhausted",
                        "last_status_at": time.time() - 7200,
                        "last_error_code": 429,
                        "last_error_reason": "device_code_exhausted",
                        "last_error_reset_at": time.time() + 7 * 24 * 60 * 60,
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openai-codex")
    assert pool.has_available() is False
    assert pool.select() is None


def test_mark_exhausted_and_rotate_persists_status(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "sk-ant-api-primary",
                    },
                    {
                        "id": "cred-2",
                        "label": "secondary",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "sk-ant-api-secondary",
                    },
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")
    assert pool.select().id == "cred-1"

    next_entry = pool.mark_exhausted_and_rotate(status_code=402)

    assert next_entry is not None
    assert next_entry.id == "cred-2"

    auth_payload = json.loads((tmp_path / "hermes" / "auth.json").read_text())
    persisted = auth_payload["credential_pool"]["anthropic"][0]
    assert persisted["last_status"] == "exhausted"
    assert persisted["last_error_code"] == 402


def test_load_pool_seeds_env_api_key(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.setenv("OPENROUTER_API_KEY", "sk-or-seeded")
    _write_auth_store(tmp_path, {"version": 1, "providers": {}})

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    entry = pool.select()

    assert entry is not None
    assert entry.source == "env:OPENROUTER_API_KEY"
    assert entry.access_token == "sk-or-seeded"


def test_load_pool_removes_stale_seeded_env_entry(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.delenv("OPENROUTER_API_KEY", raising=False)
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "seeded-env",
                        "label": "OPENROUTER_API_KEY",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "env:OPENROUTER_API_KEY",
                        "access_token": "stale-token",
                        "base_url": "https://openrouter.ai/api/v1",
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")

    assert pool.entries() == []

    auth_payload = json.loads((tmp_path / "hermes" / "auth.json").read_text())
    assert auth_payload["credential_pool"]["openrouter"] == []


def test_load_pool_migrates_nous_provider_state(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-token",
                    "refresh_token": "refresh-token",
                    "expires_at": "2026-03-24T12:00:00+00:00",
                    "agent_key": "agent-key",
                    "agent_key_expires_at": "2026-03-24T13:30:00+00:00",
                }
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("nous")
    entry = pool.select()

    assert entry is not None
    assert entry.source == "device_code"
    assert entry.portal_base_url == "https://portal.example.com"
    assert entry.agent_key == "agent-key"


def test_load_pool_removes_stale_file_backed_singleton_entry(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.delenv("ANTHROPIC_API_KEY", raising=False)
    monkeypatch.delenv("ANTHROPIC_TOKEN", raising=False)
    monkeypatch.delenv("CLAUDE_CODE_OAUTH_TOKEN", raising=False)
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "seeded-file",
                        "label": "claude-code",
                        "auth_type": "oauth",
                        "priority": 0,
                        "source": "claude_code",
                        "access_token": "stale-access-token",
                        "refresh_token": "stale-refresh-token",
                        "expires_at_ms": int(time.time() * 1000) + 60_000,
                    }
                ]
            },
        },
    )

    monkeypatch.setattr(
        "agent.anthropic_adapter.read_hermes_oauth_credentials",
        lambda: None,
    )
    monkeypatch.setattr(
        "agent.anthropic_adapter.read_claude_code_credentials",
        lambda: None,
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")

    assert pool.entries() == []

    auth_payload = json.loads((tmp_path / "hermes" / "auth.json").read_text())
    assert auth_payload["credential_pool"]["anthropic"] == []


def test_load_pool_migrates_nous_provider_state_preserves_tls(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-token",
                    "refresh_token": "refresh-token",
                    "expires_at": "2026-03-24T12:00:00+00:00",
                    "agent_key": "agent-key",
                    "agent_key_expires_at": "2026-03-24T13:30:00+00:00",
                    "tls": {
                        "insecure": True,
                        "ca_bundle": "/tmp/nous-ca.pem",
                    },
                }
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("nous")
    entry = pool.select()

    assert entry is not None
    assert entry.tls == {
        "insecure": True,
        "ca_bundle": "/tmp/nous-ca.pem",
    }

    auth_payload = json.loads((tmp_path / "hermes" / "auth.json").read_text())
    assert auth_payload["credential_pool"]["nous"][0]["tls"] == {
        "insecure": True,
        "ca_bundle": "/tmp/nous-ca.pem",
    }


def test_singleton_seed_does_not_clobber_manual_oauth_entry(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.delenv("ANTHROPIC_API_KEY", raising=False)
    monkeypatch.delenv("ANTHROPIC_TOKEN", raising=False)
    monkeypatch.delenv("CLAUDE_CODE_OAUTH_TOKEN", raising=False)
    monkeypatch.setattr("hermes_cli.auth.is_provider_explicitly_configured", lambda pid: True)
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "manual-1",
                        "label": "manual-pkce",
                        "auth_type": "oauth",
                        "priority": 0,
                        "source": "manual:hermes_pkce",
                        "access_token": "manual-token",
                        "refresh_token": "manual-refresh",
                        "expires_at_ms": 1711234567000,
                    }
                ]
            },
        },
    )

    monkeypatch.setattr(
        "agent.anthropic_adapter.read_hermes_oauth_credentials",
        lambda: {
            "accessToken": "seeded-token",
            "refreshToken": "seeded-refresh",
            "expiresAt": 1711234999000,
        },
    )
    monkeypatch.setattr(
        "agent.anthropic_adapter.read_claude_code_credentials",
        lambda: None,
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")
    entries = pool.entries()

    assert len(entries) == 2
    assert {entry.source for entry in entries} == {"manual:hermes_pkce", "hermes_pkce"}


def test_load_pool_prefers_anthropic_env_token_over_file_backed_oauth(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.delenv("ANTHROPIC_API_KEY", raising=False)
    monkeypatch.setenv("ANTHROPIC_TOKEN", "env-override-token")
    monkeypatch.delenv("CLAUDE_CODE_OAUTH_TOKEN", raising=False)
    _write_auth_store(tmp_path, {"version": 1, "providers": {}})

    monkeypatch.setattr(
        "agent.anthropic_adapter.read_hermes_oauth_credentials",
        lambda: {
            "accessToken": "file-backed-token",
            "refreshToken": "refresh-token",
            "expiresAt": int(time.time() * 1000) + 3_600_000,
        },
    )
    monkeypatch.setattr(
        "agent.anthropic_adapter.read_claude_code_credentials",
        lambda: None,
    )

    from agent.credential_pool import load_pool

    pool = load_pool("anthropic")
    entry = pool.select()

    assert entry is not None
    assert entry.source == "env:ANTHROPIC_TOKEN"
    assert entry.access_token == "env-override-token"


def test_least_used_strategy_selects_lowest_count(tmp_path, monkeypatch):
    """least_used strategy should select the credential with the lowest request_count."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.setattr(
        "agent.credential_pool.get_pool_strategy",
        lambda _provider: "least_used",
    )
    monkeypatch.setattr(
        "agent.credential_pool._seed_from_singletons",
        lambda provider, entries: (False, set()),
    )
    monkeypatch.setattr(
        "agent.credential_pool._seed_from_env",
        lambda provider, entries: (False, set()),
    )
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "key-a",
                        "label": "heavy",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "sk-or-heavy",
                        "request_count": 100,
                    },
                    {
                        "id": "key-b",
                        "label": "light",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "sk-or-light",
                        "request_count": 10,
                    },
                    {
                        "id": "key-c",
                        "label": "medium",
                        "auth_type": "api_key",
                        "priority": 2,
                        "source": "manual",
                        "access_token": "sk-or-medium",
                        "request_count": 50,
                    },
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    entry = pool.select()
    assert entry is not None
    assert entry.id == "key-b"
    assert entry.access_token == "sk-or-light"


def test_thread_safety_concurrent_select(tmp_path, monkeypatch):
    """Concurrent select() calls should not corrupt pool state."""
    import threading as _threading

    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.setattr(
        "agent.credential_pool.get_pool_strategy",
        lambda _provider: "round_robin",
    )
    monkeypatch.setattr(
        "agent.credential_pool._seed_from_singletons",
        lambda provider, entries: (False, set()),
    )
    monkeypatch.setattr(
        "agent.credential_pool._seed_from_env",
        lambda provider, entries: (False, set()),
    )
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": f"key-{i}",
                        "label": f"key-{i}",
                        "auth_type": "api_key",
                        "priority": i,
                        "source": "manual",
                        "access_token": f"sk-or-{i}",
                    }
                    for i in range(5)
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    results = []
    errors = []

    def worker():
        try:
            for _ in range(20):
                entry = pool.select()
                if entry:
                    results.append(entry.id)
        except Exception as exc:
            errors.append(exc)

    threads = [_threading.Thread(target=worker) for _ in range(4)]
    for t in threads:
        t.start()
    for t in threads:
        t.join()

    assert not errors, f"Thread errors: {errors}"
    assert len(results) == 80  # 4 threads * 20 selects


def test_custom_endpoint_pool_keyed_by_name(tmp_path, monkeypatch):
    """Verify load_pool('custom:together.ai') works and returns entries from auth.json."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    # Disable seeding so we only test stored entries
    monkeypatch.setattr(
        "agent.credential_pool._seed_custom_pool",
        lambda pool_key, entries: (False, set()),
    )
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "custom:together.ai": [
                    {
                        "id": "cred-1",
                        "label": "together-key",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "sk-together-xxx",
                        "base_url": "https://api.together.ai/v1",
                    },
                    {
                        "id": "cred-2",
                        "label": "together-key-2",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "sk-together-yyy",
                        "base_url": "https://api.together.ai/v1",
                    },
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("custom:together.ai")
    assert pool.has_credentials()
    entries = pool.entries()
    assert len(entries) == 2
    assert entries[0].access_token == "sk-together-xxx"
    assert entries[1].access_token == "sk-together-yyy"

    # Select should return the first entry (fill_first default)
    entry = pool.select()
    assert entry is not None
    assert entry.id == "cred-1"


def test_custom_endpoint_pool_seeds_from_config(tmp_path, monkeypatch):
    """Verify seeding from custom_providers api_key in config.yaml."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1})

    # Write config.yaml with a custom_providers entry
    config_path = tmp_path / "hermes" / "config.yaml"
    import yaml
    config_path.write_text(yaml.dump({
        "custom_providers": [
            {
                "name": "Together.ai",
                "base_url": "https://api.together.ai/v1",
                "api_key": "sk-config-seeded",
            }
        ]
    }))

    from agent.credential_pool import load_pool

    pool = load_pool("custom:together.ai")
    assert pool.has_credentials()
    entries = pool.entries()
    assert len(entries) == 1
    assert entries[0].access_token == "sk-config-seeded"
    assert entries[0].source == "config:Together.ai"


def test_custom_endpoint_pool_seeds_from_model_config(tmp_path, monkeypatch):
    """Verify seeding from model.api_key when model.provider=='custom' and base_url matches."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1})

    import yaml
    config_path = tmp_path / "hermes" / "config.yaml"
    config_path.write_text(yaml.dump({
        "custom_providers": [
            {
                "name": "Together.ai",
                "base_url": "https://api.together.ai/v1",
            }
        ],
        "model": {
            "provider": "custom",
            "base_url": "https://api.together.ai/v1",
            "api_key": "sk-model-key",
        },
    }))

    from agent.credential_pool import load_pool

    pool = load_pool("custom:together.ai")
    assert pool.has_credentials()
    entries = pool.entries()
    # Should have the model_config entry
    model_entries = [e for e in entries if e.source == "model_config"]
    assert len(model_entries) == 1
    assert model_entries[0].access_token == "sk-model-key"


def test_custom_pool_does_not_break_existing_providers(tmp_path, monkeypatch):
    """Existing registry providers work exactly as before with custom pool support."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    monkeypatch.setenv("OPENROUTER_API_KEY", "sk-or-test")
    _write_auth_store(tmp_path, {"version": 1, "providers": {}})

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    entry = pool.select()
    assert entry is not None
    assert entry.source == "env:OPENROUTER_API_KEY"
    assert entry.access_token == "sk-or-test"


def test_get_custom_provider_pool_key(tmp_path, monkeypatch):
    """get_custom_provider_pool_key maps base_url to custom:<name> pool key."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    (tmp_path / "hermes").mkdir(parents=True, exist_ok=True)
    import yaml
    config_path = tmp_path / "hermes" / "config.yaml"
    config_path.write_text(yaml.dump({
        "custom_providers": [
            {
                "name": "Together.ai",
                "base_url": "https://api.together.ai/v1",
                "api_key": "sk-xxx",
            },
            {
                "name": "My Local Server",
                "base_url": "http://localhost:8080/v1",
            },
        ]
    }))

    from agent.credential_pool import get_custom_provider_pool_key

    assert get_custom_provider_pool_key("https://api.together.ai/v1") == "custom:together.ai"
    assert get_custom_provider_pool_key("https://api.together.ai/v1/") == "custom:together.ai"
    assert get_custom_provider_pool_key("http://localhost:8080/v1") == "custom:my-local-server"
    assert get_custom_provider_pool_key("https://unknown.example.com/v1") is None
    assert get_custom_provider_pool_key("") is None


def test_list_custom_pool_providers(tmp_path, monkeypatch):
    """list_custom_pool_providers returns custom: pool keys from auth.json."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "anthropic": [
                    {
                        "id": "a1",
                        "label": "test",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    }
                ],
                "custom:together.ai": [
                    {
                        "id": "c1",
                        "label": "together",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    }
                ],
                "custom:fireworks": [
                    {
                        "id": "c2",
                        "label": "fireworks",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    }
                ],
                "custom:empty": [],
            },
        },
    )

    from agent.credential_pool import list_custom_pool_providers

    result = list_custom_pool_providers()
    assert result == ["custom:fireworks", "custom:together.ai"]
    # "custom:empty" not included because it's empty



def test_acquire_lease_prefers_unleased_entry(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    },
                    {
                        "id": "cred-2",
                        "label": "secondary",
                        "auth_type": "api_key",
                        "priority": 1,
                        "source": "manual",
                        "access_token": "***",
                    },
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    first = pool.acquire_lease()
    second = pool.acquire_lease()

    assert first == "cred-1"
    assert second == "cred-2"
    assert pool._active_leases.get("cred-1", 0) == 1
    assert pool._active_leases.get("cred-2", 0) == 1



def test_release_lease_decrements_counter(tmp_path, monkeypatch):
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "credential_pool": {
                "openrouter": [
                    {
                        "id": "cred-1",
                        "label": "primary",
                        "auth_type": "api_key",
                        "priority": 0,
                        "source": "manual",
                        "access_token": "***",
                    }
                ]
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("openrouter")
    leased = pool.acquire_lease()
    assert leased == "cred-1"
    assert pool._active_leases.get("cred-1", 0) == 1

    pool.release_lease("cred-1")
    assert pool._active_leases.get("cred-1", 0) == 0


def test_load_pool_does_not_seed_claude_code_when_anthropic_not_configured(tmp_path, monkeypatch):
    """Claude Code credentials must not be auto-seeded when the user never selected anthropic."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1, "credential_pool": {}})

    # Claude Code credentials exist on disk
    monkeypatch.setattr(
        "agent.anthropic_adapter.read_claude_code_credentials",
        lambda: {"accessToken": "sk-ant...oken", "refreshToken": "rt", "expiresAt": 9999999999999},
    )
    monkeypatch.setattr(
        "agent.anthropic_adapter.read_hermes_oauth_credentials",
        lambda: None,
    )
    # User configured kimi-coding, NOT anthropic
    monkeypatch.setattr(
        "hermes_cli.auth.is_provider_explicitly_configured",
        lambda pid: pid == "kimi-coding",
    )

    from agent.credential_pool import load_pool
    pool = load_pool("anthropic")

    # Should NOT have seeded the claude_code entry
    assert pool.entries() == []


def test_load_pool_seeds_copilot_via_gh_auth_token(tmp_path, monkeypatch):
    """Copilot credentials from `gh auth token` should be seeded into the pool."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1, "credential_pool": {}})

    monkeypatch.setattr(
        "hermes_cli.copilot_auth.resolve_copilot_token",
        lambda: ("gho_fake_token_abc123", "gh auth token"),
    )

    from agent.credential_pool import load_pool
    pool = load_pool("copilot")

    assert pool.has_credentials()
    entries = pool.entries()
    assert len(entries) == 1
    assert entries[0].source == "gh_cli"
    assert entries[0].access_token == "gho_fake_token_abc123"
    assert entries[0].base_url == "https://api.githubcopilot.com"


def test_load_pool_does_not_seed_copilot_when_no_token(tmp_path, monkeypatch):
    """Copilot pool should be empty when resolve_copilot_token() returns nothing."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1, "credential_pool": {}})

    monkeypatch.setattr(
        "hermes_cli.copilot_auth.resolve_copilot_token",
        lambda: ("", ""),
    )

    from agent.credential_pool import load_pool
    pool = load_pool("copilot")

    assert not pool.has_credentials()
    assert pool.entries() == []


def test_load_pool_seeds_qwen_oauth_via_cli_tokens(tmp_path, monkeypatch):
    """Qwen OAuth credentials from ~/.qwen/oauth_creds.json should be seeded into the pool."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1, "credential_pool": {}})

    monkeypatch.setattr(
        "hermes_cli.auth.resolve_qwen_runtime_credentials",
        lambda **kw: {
            "provider": "qwen-oauth",
            "base_url": "https://portal.qwen.ai/v1",
            "api_key": "qwen_fake_token_xyz",
            "source": "qwen-cli",
            "expires_at_ms": 1900000000000,
            "auth_file": str(tmp_path / ".qwen" / "oauth_creds.json"),
        },
    )

    from agent.credential_pool import load_pool
    pool = load_pool("qwen-oauth")

    assert pool.has_credentials()
    entries = pool.entries()
    assert len(entries) == 1
    assert entries[0].source == "qwen-cli"
    assert entries[0].access_token == "qwen_fake_token_xyz"


def test_load_pool_does_not_seed_qwen_oauth_when_no_token(tmp_path, monkeypatch):
    """Qwen OAuth pool should be empty when no CLI credentials exist."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, {"version": 1, "credential_pool": {}})

    from hermes_cli.auth import AuthError

    monkeypatch.setattr(
        "hermes_cli.auth.resolve_qwen_runtime_credentials",
        lambda **kw: (_ for _ in ()).throw(
            AuthError("Qwen CLI credentials not found.", provider="qwen-oauth", code="qwen_auth_missing")
        ),
    )

    from agent.credential_pool import load_pool
    pool = load_pool("qwen-oauth")

    assert not pool.has_credentials()
    assert pool.entries() == []


def test_nous_seed_from_singletons_preserves_obtained_at_timestamps(tmp_path, monkeypatch):
    """Regression test for #15099 secondary issue.

    When ``_seed_from_singletons`` materialises a device_code pool entry from
    the ``providers.nous`` singleton, it must carry the mint/refresh
    timestamps (``obtained_at``, ``agent_key_obtained_at``, ``expires_in``,
    etc.) into the pool entry.  Without them, freshness-sensitive consumers
    (self-heal hooks, pool pruning by age) treat just-minted credentials as
    older than they actually are and evict them.
    """
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "providers": {
                "nous": {
                    "access_token": "at_XXXXXXXX",
                    "refresh_token": "rt_YYYYYYYY",
                    "client_id": "hermes-cli",
                    "portal_base_url": "https://portal.nousresearch.com",
                    "inference_base_url": "https://inference.nousresearch.com/v1",
                    "token_type": "Bearer",
                    "scope": "openid profile",
                    "obtained_at": "2026-04-24T10:00:00+00:00",
                    "expires_at": "2026-04-24T11:00:00+00:00",
                    "expires_in": 3600,
                    "agent_key": "sk-nous-AAAA",
                    "agent_key_id": "ak_123",
                    "agent_key_expires_at": "2026-04-25T10:00:00+00:00",
                    "agent_key_expires_in": 86400,
                    "agent_key_reused": False,
                    "agent_key_obtained_at": "2026-04-24T10:00:05+00:00",
                    "tls": {"insecure": False, "ca_bundle": None},
                },
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("nous")
    entries = pool.entries()

    device_entries = [e for e in entries if e.source == "device_code"]
    assert len(device_entries) == 1, f"expected single device_code entry; got {len(device_entries)}"
    e = device_entries[0]

    # Direct dataclass fields — must survive the singleton → pool copy.
    assert e.access_token == "at_XXXXXXXX"
    assert e.refresh_token == "rt_YYYYYYYY"
    assert e.expires_at == "2026-04-24T11:00:00+00:00"
    assert e.agent_key == "sk-nous-AAAA"
    assert e.agent_key_expires_at == "2026-04-25T10:00:00+00:00"

    # Extra fields — this is what regressed.  These must be carried through
    # via ``extra`` dict or __getattr__, NOT silently dropped.
    assert e.obtained_at == "2026-04-24T10:00:00+00:00", (
        f"obtained_at was dropped during seed; got {e.obtained_at!r}. This breaks "
        f"downstream pool-freshness consumers (#15099)."
    )
    assert e.agent_key_obtained_at == "2026-04-24T10:00:05+00:00"
    assert e.expires_in == 3600
    assert e.agent_key_id == "ak_123"
    assert e.agent_key_expires_in == 86400
    assert e.agent_key_reused is False


class TestLeastUsedStrategy:
    """Regression: least_used strategy must increment request_count on select."""

    def test_request_count_increments(self):
        """Each select() call should increment the chosen entry's request_count."""
        from unittest.mock import patch as _patch
        from agent.credential_pool import CredentialPool, PooledCredential, STRATEGY_LEAST_USED

        entries = [
            PooledCredential(provider="test", id="a", label="a", auth_type="api_key",
                             source="a", access_token="tok-a", priority=0, request_count=0),
            PooledCredential(provider="test", id="b", label="b", auth_type="api_key",
                             source="b", access_token="tok-b", priority=1, request_count=0),
        ]
        with _patch("agent.credential_pool.get_pool_strategy", return_value=STRATEGY_LEAST_USED):
            pool = CredentialPool("test", entries)

        # First select should pick entry with lowest count (both 0 → first)
        e1 = pool.select()
        assert e1 is not None
        count_after_first = e1.request_count
        assert count_after_first == 1, f"Expected 1 after first select, got {count_after_first}"

        # Second select should pick the OTHER entry (now has lower count)
        e2 = pool.select()
        assert e2 is not None
        assert e2.id != e1.id or e2.request_count == 2, (
            "least_used should alternate or increment"
        )


# ── PR #10160 salvage: Nous OAuth cross-process sync tests ─────────────────

def test_sync_nous_entry_from_auth_store_adopts_newer_tokens(tmp_path, monkeypatch):
    """When auth.json has a newer refresh token, the pool entry should adopt it."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-OLD",
                    "refresh_token": "refresh-OLD",
                    "expires_at": "2026-03-24T12:00:00+00:00",
                    "agent_key": "agent-key-OLD",
                    "agent_key_expires_at": "2026-03-24T13:30:00+00:00",
                }
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("nous")
    entry = pool.select()
    assert entry is not None
    assert entry.refresh_token == "refresh-OLD"

    # Simulate another process refreshing the token in auth.json
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-NEW",
                    "refresh_token": "refresh-NEW",
                    "expires_at": "2026-03-24T12:30:00+00:00",
                    "agent_key": "agent-key-NEW",
                    "agent_key_expires_at": "2026-03-24T14:00:00+00:00",
                }
            },
        },
    )

    synced = pool._sync_nous_entry_from_auth_store(entry)
    assert synced is not entry
    assert synced.access_token == "access-NEW"
    assert synced.refresh_token == "refresh-NEW"
    assert synced.agent_key == "agent-key-NEW"
    assert synced.agent_key_expires_at == "2026-03-24T14:00:00+00:00"

def test_sync_nous_entry_noop_when_tokens_match(tmp_path, monkeypatch):
    """When auth.json has the same refresh token, sync should be a no-op."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-token",
                    "refresh_token": "refresh-token",
                    "expires_at": "2026-03-24T12:00:00+00:00",
                    "agent_key": "agent-key",
                    "agent_key_expires_at": "2026-03-24T13:30:00+00:00",
                }
            },
        },
    )

    from agent.credential_pool import load_pool

    pool = load_pool("nous")
    entry = pool.select()
    assert entry is not None

    synced = pool._sync_nous_entry_from_auth_store(entry)
    assert synced is entry

def test_nous_exhausted_entry_recovers_via_auth_store_sync(tmp_path, monkeypatch):
    """An exhausted Nous entry should recover when auth.json has newer tokens."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    from agent.credential_pool import load_pool, STATUS_EXHAUSTED
    from dataclasses import replace as dc_replace

    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-OLD",
                    "refresh_token": "refresh-OLD",
                    "expires_at": "2026-03-24T12:00:00+00:00",
                    "agent_key": "agent-key",
                    "agent_key_expires_at": "2026-03-24T13:30:00+00:00",
                }
            },
        },
    )

    pool = load_pool("nous")
    entry = pool.select()
    assert entry is not None

    # Mark entry as exhausted (simulating a failed refresh)
    exhausted = dc_replace(
        entry,
        last_status=STATUS_EXHAUSTED,
        last_status_at=time.time(),
        last_error_code=401,
    )
    pool._replace_entry(entry, exhausted)
    pool._persist()

    # Simulate another process having successfully refreshed
    _write_auth_store(
        tmp_path,
        {
            "version": 1,
            "active_provider": "nous",
            "providers": {
                "nous": {
                    "portal_base_url": "https://portal.example.com",
                    "inference_base_url": "https://inference.example.com/v1",
                    "client_id": "hermes-cli",
                    "token_type": "Bearer",
                    "scope": "inference:mint_agent_key",
                    "access_token": "access-FRESH",
                    "refresh_token": "refresh-FRESH",
                    "expires_at": "2026-03-24T12:30:00+00:00",
                    "agent_key": "agent-key-FRESH",
                    "agent_key_expires_at": "2026-03-24T14:00:00+00:00",
                }
            },
        },
    )

    available = pool._available_entries(clear_expired=True)
    assert len(available) == 1
    assert available[0].refresh_token == "refresh-FRESH"
    assert available[0].last_status is None


# ── OpenAI Codex OAuth cross-process sync tests ────────────────────────────

def _codex_auth_store(access: str, refresh: str) -> dict:
    return {
        "version": 1,
        "active_provider": "openai-codex",
        "providers": {
            "openai-codex": {
                "auth_mode": "chatgpt",
                "tokens": {
                    "access_token": access,
                    "refresh_token": refresh,
                    "id_token": "id-" + access,
                },
                "last_refresh": "2026-04-28T00:00:00Z",
            }
        },
    }


def test_sync_codex_entry_from_auth_store_adopts_newer_tokens(tmp_path, monkeypatch):
    """When auth.json has newer Codex tokens, the pool entry should adopt them."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, _codex_auth_store("access-OLD", "refresh-OLD"))

    from agent.credential_pool import load_pool

    pool = load_pool("openai-codex")
    entry = pool.select()
    assert entry is not None
    assert entry.access_token == "access-OLD"
    assert entry.refresh_token == "refresh-OLD"

    # Simulate `hermes auth openai-codex` replacing the token pair on disk.
    _write_auth_store(tmp_path, _codex_auth_store("access-NEW", "refresh-NEW"))

    synced = pool._sync_codex_entry_from_auth_store(entry)
    assert synced is not entry
    assert synced.access_token == "access-NEW"
    assert synced.refresh_token == "refresh-NEW"
    assert synced.last_status is None
    assert synced.last_error_code is None
    assert synced.last_error_reset_at is None


def test_sync_codex_entry_noop_when_tokens_match(tmp_path, monkeypatch):
    """When auth.json has the same tokens, sync should be a no-op."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    _write_auth_store(tmp_path, _codex_auth_store("access-same", "refresh-same"))

    from agent.credential_pool import load_pool

    pool = load_pool("openai-codex")
    entry = pool.select()
    assert entry is not None

    synced = pool._sync_codex_entry_from_auth_store(entry)
    assert synced is entry


def test_codex_exhausted_entry_recovers_via_auth_store_sync(tmp_path, monkeypatch):
    """An exhausted Codex entry should recover when auth.json has newer tokens.

    Reproduces the Discord report (p1aceho1der, Apr 2026): after a Codex
    rate-limit reset the user ran `hermes model` to reauth, but the pool
    entry stayed marked EXHAUSTED with last_error_reset_at many hours in
    the future — so `_available_entries` kept returning empty and every
    request failed with "no available entries (all exhausted or empty)".
    """
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    from agent.credential_pool import load_pool, STATUS_EXHAUSTED
    from dataclasses import replace as dc_replace

    _write_auth_store(tmp_path, _codex_auth_store("access-OLD", "refresh-OLD"))

    pool = load_pool("openai-codex")
    entry = pool.select()
    assert entry is not None

    # Mark entry as exhausted with last_error_reset_at one hour in the
    # future (Codex 429 weekly-window pattern).
    now = time.time()
    exhausted = dc_replace(
        entry,
        last_status=STATUS_EXHAUSTED,
        last_status_at=now,
        last_error_code=429,
        last_error_reset_at=now + 3600,
    )
    pool._replace_entry(entry, exhausted)
    pool._persist()

    # Sanity: before the reauth, _available_entries refuses to return
    # this entry because last_error_reset_at is in the future.
    # (clear_expired would only clear it AFTER exhausted_until elapsed.)
    available_before = pool._available_entries(clear_expired=True, refresh=False)
    assert available_before == []

    # Simulate `hermes model` / `hermes auth` refreshing the tokens.
    _write_auth_store(tmp_path, _codex_auth_store("access-FRESH", "refresh-FRESH"))

    available = pool._available_entries(clear_expired=True, refresh=False)
    assert len(available) == 1
    assert available[0].access_token == "access-FRESH"
    assert available[0].refresh_token == "refresh-FRESH"
    assert available[0].last_status is None
    assert available[0].last_error_reset_at is None


def test_codex_exhausted_entry_stays_stuck_without_auth_store_update(tmp_path, monkeypatch):
    """Regression guard: if auth.json tokens haven't changed, the exhausted
    entry must stay stuck behind its reset window — sync must not spuriously
    clear status just because the entry is STATUS_EXHAUSTED."""
    monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
    from agent.credential_pool import load_pool, STATUS_EXHAUSTED
    from dataclasses import replace as dc_replace

    _write_auth_store(tmp_path, _codex_auth_store("access-same", "refresh-same"))

    pool = load_pool("openai-codex")
    entry = pool.select()
    assert entry is not None

    now = time.time()
    exhausted = dc_replace(
        entry,
        last_status=STATUS_EXHAUSTED,
        last_status_at=now,
        last_error_code=429,
        last_error_reset_at=now + 3600,
    )
    pool._replace_entry(entry, exhausted)
    pool._persist()

    # auth.json unchanged → sync returns same entry → exhausted_until check
    # still skips it.
    available = pool._available_entries(clear_expired=True, refresh=False)
    assert available == []
