#!/usr/bin/env bash
# VENDORED COPY — DO NOT EDIT THIS FILE BY HAND.
#
# Source of truth:
#   git.moleculesai.app/molecule-ai/molecule-ai-workspace-template-hermes
#   scripts/derive-provider.sh
#
# This snapshot is read by derive_provider_drift_test.go so the AST
# drift gate stays hermetic (no network, no submodule, no path-walk).
# When upstream changes, refresh via:
#
#   cp ~/path/to/molecule-ai-workspace-template-hermes/scripts/derive-provider.sh \
#      workspace-server/internal/handlers/testdata/derive-provider.sh
#
# (and re-add the VENDORED COPY header below.) The drift test will
# fail loudly if upstream adds prefixes that deriveProviderFromModelSlug
# doesn't handle — fix it by adding the missing case to the Go function,
# not by silently widening acceptedDivergences.
#
# derive-provider.sh — map a hermes-agent model slug to its provider
# name. Sourced by both install.sh (SaaS bare-host path) and start.sh
# (Docker path) so the two entry-points stay consistent.
#
# Contract:
#   Reads:  $HERMES_INFERENCE_PROVIDER (if already set, we respect it)
#           $HERMES_INFERENCE_MODEL    (preferred — matches upstream env name)
#           $HERMES_DEFAULT_MODEL      (legacy fallback — name we invented before
#                                       2026-05; workspace-server still writes
#                                       it during the migration window)
#           $HERMES_API_KEY / $NOUS_API_KEY (affect the nousresearch/* branch)
#   Writes: $PROVIDER — the derived provider name, or "auto" if unknown.
#
# Upstream's actual env var is $HERMES_INFERENCE_MODEL (see
# website/docs/reference/environment-variables.md in NousResearch/hermes-agent).
# We accept both for one release cycle so workspaces booting under the legacy
# control-plane don't break — drop $HERMES_DEFAULT_MODEL once workspace-server
# is updated to write the upstream name.
#
# Why the per-template sub-script (vs doing this in CP): every runtime
# has its own provider taxonomy. Keeping the logic inside the template
# repo means CP stays runtime-agnostic and adding a new runtime with
# different provider semantics doesn't require a CP edit.
#
# Hermes-specific quirks encoded here:
#   - `openai/...` routes through `openrouter` (hermes has no direct
#     openai provider; openai-codex is OAuth-only for Codex models)
#   - `nousresearch/...` prefers direct `nous` if HERMES_API_KEY is
#     set, else falls back to `openrouter` (which also serves Hermes 3)
#   - chinese-region variants (minimax-cn, kimi-coding-cn) keep their
#     full prefix as the provider name
#
# See molecule-controlplane/docs/canary-tenants.md and the hermes-agent
# providers.md docs for the full taxonomy.

# Honour an explicit override.
if [ -n "${HERMES_INFERENCE_PROVIDER:-}" ]; then
  PROVIDER="${HERMES_INFERENCE_PROVIDER}"
  return 0 2>/dev/null || exit 0
fi

# Resolve the model slug — prefer the upstream env name, fall back to legacy.
_HERMES_MODEL="${HERMES_INFERENCE_MODEL:-${HERMES_DEFAULT_MODEL:-}}"

if [ -z "${_HERMES_MODEL}" ]; then
  PROVIDER="auto"
  return 0 2>/dev/null || exit 0
fi

case "${_HERMES_MODEL}" in
  # Keep full CN-suffix as provider so chinese-region keys route right
  minimax-cn/*)            PROVIDER="minimax-cn" ;;
  kimi-coding-cn/*)        PROVIDER="kimi-coding-cn" ;;

  # Direct-SDK providers (clean 1:1 prefix→provider mapping)
  minimax/*)               PROVIDER="minimax" ;;
  anthropic/*)             PROVIDER="anthropic" ;;
  gemini/*)                PROVIDER="gemini" ;;
  deepseek/*)              PROVIDER="deepseek" ;;
  zai/*)                   PROVIDER="zai" ;;
  kimi-coding/*)           PROVIDER="kimi-coding" ;;
  alibaba/*|dashscope/*|qwen/*) PROVIDER="alibaba" ;;
  xiaomi/*|mimo/*)         PROVIDER="xiaomi" ;;
  arcee/*|arcee-ai/*)      PROVIDER="arcee" ;;
  nvidia/*|nim/*)          PROVIDER="nvidia" ;;
  ollama-cloud/*)          PROVIDER="ollama-cloud" ;;
  huggingface/*|hf/*)      PROVIDER="huggingface" ;;
  ai-gateway/*|aigateway/*) PROVIDER="ai-gateway" ;;
  kilocode/*)              PROVIDER="kilocode" ;;
  opencode-zen/*)          PROVIDER="opencode-zen" ;;
  opencode-go/*)           PROVIDER="opencode-go" ;;

  # Hermes-specific routing quirks. `openai/*` has two valid targets:
  #   1. hermes's "custom" provider pointed at api.openai.com — requires
  #      OPENAI_API_KEY. install.sh sees this case and auto-populates
  #      HERMES_CUSTOM_{BASE_URL,API_KEY} so the direct-OpenAI path works
  #      without the user having to set HERMES_CUSTOM_* explicitly.
  #   2. OpenRouter (hermes's built-in path — requires OPENROUTER_API_KEY).
  #
  # Priority: prefer **custom** (direct OpenAI) when OPENAI_API_KEY is set.
  # The operator supplying OPENAI_API_KEY for an openai/* model is an
  # explicit intent signal to hit OpenAI directly. The previous "prefer
  # OR if any OR key exists" rule silently hijacked that intent whenever
  # a tenant-global OPENROUTER_API_KEY was present (even if stale/empty
  # enough to 401), which is exactly what bit the 2026-04-23 E2E (surfaced
  # as OpenRouter's `401 Missing Authentication header` in the agent reply).
  #
  # To explicitly route openai/* through OR, set HERMES_INFERENCE_PROVIDER=openrouter
  # (handled at the top of this file) or use an openrouter/* model slug.
  openai/*)
    if [ -n "${OPENAI_API_KEY:-}" ]; then
      PROVIDER="custom"
    elif [ -n "${OPENROUTER_API_KEY:-}" ]; then
      PROVIDER="openrouter"
    else
      PROVIDER="openrouter" # no-key fallback — hermes will error clearly
    fi
    ;;
  nousresearch/*)
    # Prefer direct Nous Portal if Nous credentials present, else OR.
    if [ -n "${HERMES_API_KEY:-}" ] || [ -n "${NOUS_API_KEY:-}" ]; then
      PROVIDER="nous"
    else
      PROVIDER="openrouter"
    fi
    ;;

  # Explicit catch-alls
  openrouter/*)            PROVIDER="openrouter" ;;
  custom/*)                PROVIDER="custom" ;;

  # Additional 1:1 prefix→provider mappings — kept aligned with upstream's
  # HERMES_INFERENCE_PROVIDER list (website/docs/reference/environment-variables.md
  # in NousResearch/hermes-agent, v0.12.0 / 2026-04-30). Place these BEFORE the
  # catch-all so they win.
  xai/*|grok/*)            PROVIDER="xai" ;;
  bedrock/*|aws/*)         PROVIDER="bedrock" ;;
  tencent/*|tencent-tokenhub/*) PROVIDER="tencent-tokenhub" ;;
  gmi/*)                   PROVIDER="gmi" ;;
  qwen-oauth/*)            PROVIDER="qwen-oauth" ;;
  lmstudio/*|lm-studio/*)  PROVIDER="lmstudio" ;;
  minimax-oauth/*)         PROVIDER="minimax-oauth" ;;
  alibaba-coding-plan/*)   PROVIDER="alibaba-coding-plan" ;;
  google-gemini-cli/*)     PROVIDER="google-gemini-cli" ;;
  openai-codex/*)          PROVIDER="openai-codex" ;;
  copilot-acp/*)           PROVIDER="copilot-acp" ;;
  copilot/*)               PROVIDER="copilot" ;;

  # Unknown prefix → let hermes auto-detect
  *)                       PROVIDER="auto" ;;
esac