// Package cmd implements the CLI command tree.
package cmd

import (
	"fmt"
	"os"
	"strings"

	"github.com/spf13/cobra"
)

// ---------------------------------------------------------------------------
// Template command group (PLATFORM-MANAGEMENT-API.md §5(b)):
//   molecule template {list, import --name <n> --file <k>=<path>..., refresh}
// All go to the tenant host with the Org API Key (AdminAuth).
// ---------------------------------------------------------------------------

var templateCmd = &cobra.Command{
	Use:   "template",
	Short: "Manage workspace templates",
}

func init() {
	templateCmd.AddCommand(templateListCmd, templateImportCmd, templateRefreshCmd)
}

var templateListCmd = &cobra.Command{
	Use:   "list",
	Short: "List workspace templates",
	RunE:  runTemplateList,
}

func runTemplateList(_ *cobra.Command, _ []string) error {
	raw, err := newClient().ListTemplates()
	if err != nil {
		return fmt.Errorf("template list: %w", err)
	}
	return printRaw(raw)
}

var templateImportFlags struct {
	name  string
	files []string // KEY=PATH pairs
}

var templateImportCmd = &cobra.Command{
	Use:   "import --name <name> --file <relpath>=<localpath> [--file ...]",
	Short: "Import a template from local files",
	Long: `Imports a template (POST /templates/import). Each --file maps a path
inside the template to a local file whose contents are read and uploaded.

  molecule template import --name my-tmpl \
      --file org.yaml=./org.yaml \
      --file config.yaml=./config.yaml`,
	RunE: runTemplateImport,
}

func init() {
	f := templateImportCmd.Flags()
	f.StringVar(&templateImportFlags.name, "name", "", "Template name (required)")
	f.StringArrayVar(&templateImportFlags.files, "file", nil, "Template file mapping relpath=localpath (repeatable, required)")
	templateImportCmd.MarkFlagRequired("name")
}

func runTemplateImport(_ *cobra.Command, _ []string) error {
	if len(templateImportFlags.files) == 0 {
		return &exitError{code: 2, msg: "template import: at least one --file relpath=localpath is required"}
	}
	files, err := readFileMappings(templateImportFlags.files)
	if err != nil {
		return &exitError{code: 2, msg: "template import: " + err.Error()}
	}
	raw, err := newClient().ImportTemplate(templateImportFlags.name, files)
	if err != nil {
		return fmt.Errorf("template import: %w", err)
	}
	return printRaw(raw)
}

// readFileMappings parses "relpath=localpath" pairs and reads each local file
// into the returned map[relpath]contents.
func readFileMappings(pairs []string) (map[string]string, error) {
	out := make(map[string]string, len(pairs))
	for _, p := range pairs {
		rel, local, ok := strings.Cut(p, "=")
		if !ok || rel == "" || local == "" {
			return nil, fmt.Errorf("invalid --file %q (want relpath=localpath)", p)
		}
		data, err := os.ReadFile(local)
		if err != nil {
			return nil, fmt.Errorf("read %s: %w", local, err)
		}
		out[rel] = string(data)
	}
	return out, nil
}

var templateRefreshCmd = &cobra.Command{
	Use:   "refresh",
	Short: "Refresh the template cache",
	RunE:  runTemplateRefresh,
}

func runTemplateRefresh(_ *cobra.Command, _ []string) error {
	raw, err := newClient().RefreshTemplates()
	if err != nil {
		return fmt.Errorf("template refresh: %w", err)
	}
	if len(raw) == 0 {
		fmt.Println("Template cache refresh triggered.")
		return nil
	}
	return printRaw(raw)
}