package cmd

import (
	"time"

	"trankilou.fr/lassistanoque/backend/internal/adapter/auth/password"
	"trankilou.fr/lassistanoque/backend/internal/adapter/database"
	"trankilou.fr/lassistanoque/backend/internal/adapter/file"
	"trankilou.fr/lassistanoque/backend/internal/adapter/llm"
	"trankilou.fr/lassistanoque/backend/internal/adapter/security"
	"trankilou.fr/lassistanoque/backend/internal/adapter/tools/searxng"
	"trankilou.fr/lassistanoque/backend/internal/adapter/tools/weather"
	"trankilou.fr/lassistanoque/backend/internal/domain"
	"trankilou.fr/lassistanoque/backend/internal/service/agent"
	"trankilou.fr/lassistanoque/backend/internal/service/auth"
	"trankilou.fr/lassistanoque/backend/internal/service/chat"
	"trankilou.fr/lassistanoque/backend/internal/service/provider"
	"trankilou.fr/lassistanoque/backend/internal/service/storage"
	"trankilou.fr/lassistanoque/backend/internal/service/tool"
	"trankilou.fr/lassistanoque/backend/internal/service/user"
)

var db database.Database

// adapters
var storeAdapter storage.StorageProvider
var llmengine domain.LLMEngine

// services
var authService *auth.Service
var userService *user.Service
var storageService *storage.Service
var providerService *provider.Service
var agentService *agent.Service
var toolService *tool.Service
var chatService *chat.Service
var tokenManager auth.TokenManager

func init() {
	var err error

	db, err = database.GetDatabase()
	if err != nil {
		panic(err)
	}

	err = db.Migrate()
	if err != nil {
		panic(err)
	}
}

func Close() {
	db.Close()
}

// Adapters
func getStoreAdapter() storage.StorageProvider {
	if storeAdapter == nil {
		var err error
		storeAdapter, err = file.GetStorageProvider(db.FileRepository())
		if err != nil {
			panic(err)
		}
	}
	return storeAdapter
}

func getAuthenticators() map[string]auth.Authenticator {
	authenticators := make(map[string]auth.Authenticator)
	pwdAuth := password.NewPasswordAuthenticator(GetTokenManager(), db.UserRepository())
	authenticators["password"] = pwdAuth
	return authenticators
}

func GetTokenManager() auth.TokenManager {
	if tokenManager == nil {
		tokenManager = security.NewJwtTokenManager(12*time.Hour, 7*24*time.Hour, "lassistanoque")
	}
	return tokenManager
}

func GetLLMAdapter() domain.LLMEngine {
	if llmengine == nil {
		llmengine = llm.NewAnyLLMEngine()
	}
	return llmengine
}

// Services
func GetStorageService() *storage.Service {
	if storageService == nil {
		storageService = storage.NewService(getStoreAdapter())
	}
	return storageService
}

func GetAuthService() *auth.Service {
	if authService == nil {
		authService = auth.NewService(db.SettingsRepository(), db.UserRepository(), getAuthenticators())
	}
	return authService
}

func GetUserService() *user.Service {
	if userService == nil {
		userService = user.NewService(db.UserRepository())
	}
	return userService
}
func GetProviderService() *provider.Service {
	if providerService == nil {
		providerService = provider.NewService(db.ProviderRepository(), db.UserRepository(), GetLLMAdapter())
	}
	return providerService
}

func GetAgentService() *agent.Service {
	if agentService == nil {
		agentService = agent.NewService(db.AgentRepository(), db.UserRepository())
	}
	return agentService
}
func GetChatService() *chat.Service {
	if chatService == nil {
		chatService = chat.NewService(
			db.UserRepository(),
			db.AgentRepository(),
			db.ProviderRepository(),
			db.ChatRepository(),
			GetLLMAdapter(),
			GetToolService(),
		)
	}
	return chatService
}

func GetToolService() *tool.Service {
	if toolService == nil {
		toolService = tool.NewService(db.ToolRepository(), db.UserRepository())
		toolService.RegisterToolImpl(&weather.WeatherTool{})
		toolService.RegisterToolImpl(&searxng.SearxngTool{})
	}
	return toolService
}