package npcinteractions

import (
	"fmt"
	"sync"

	"gitea.maximumdirect.net/eric/notarius/internal/framework/llm"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/promptfs"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/dnd/shared"
)

const promptAssetRoot = "assets/prompts"

var promptAssetManifest = shared.PromptAssetManifest{
	ModuleDir: "dnd.npc_interactions",
	ModuleFiles: []promptfs.ModulePromptFile{
		{Name: "dnd.npc_interactions.yaml", Path: "assets/prompts/dnd.npc_interactions.yaml"},
		{Name: "task.md", Path: "assets/prompts/task.md"},
		{Name: "instructions.md", Path: "assets/prompts/instructions.md"},
	},
	SharedFiles: []string{
		"common-dnd-system.md",
		"common-dnd-extraction-evidence.md",
		"common-dnd-identity.md",
		"common-dnd-transcript.md",
		"common-dnd-references.md",
		"common-dnd-npcs.md",
	},
}

func RegisterPromptAssets(registry *llm.AssetRegistry) error {
	promptFS, err := promptAssetManifest.PromptFS(embeddedAssets)
	if err != nil {
		return fmt.Errorf("prepare NPC-interaction prompt assets: %w", err)
	}
	if err := registry.RegisterPromptFS(promptFS, promptAssetRoot); err != nil {
		return err
	}
	return registry.RegisterSchemaFS(embeddedAssets, "assets/schemas")
}

func promptAssetMetadata() (string, error) {
	promptAssetHashOnce.Do(func() {
		promptAssetHash, promptAssetHashErr = promptAssetManifest.Hash(embeddedAssets)
	})
	return promptAssetHash, promptAssetHashErr
}

var (
	promptAssetHashOnce sync.Once
	promptAssetHash     string
	promptAssetHashErr  error
)