package main

import (
	"context"
	"log"
	"time"

	"github.com/joho/godotenv"

	"github.com/techxcar/backend/internal/auth"
	"github.com/techxcar/backend/internal/config"
	"github.com/techxcar/backend/internal/server"
	"github.com/techxcar/backend/internal/tenant"
	"github.com/techxcar/backend/pkg/database"
	redispkg "github.com/techxcar/backend/pkg/redis"
)

func main() {
	if err := godotenv.Load(); err != nil {
		log.Println("No .env file found, reading from environment")
	}

	cfg, err := config.Load()
	if err != nil {
		log.Fatal("Config error:", err)
	}

	db, err := database.New(cfg.DatabaseURL)
	if err != nil {
		log.Fatal("Database error:", err)
	}
	defer db.Close()

	if err := db.MigratePublic(cfg.DatabaseURL, "migrations/public"); err != nil {
		log.Fatal("Migration error:", err)
	}

	if err := db.MigrateAllTenantSchemas(context.Background(), "migrations/tenant"); err != nil {
		log.Fatal("Tenant migration error:", err)
	}

	rdb, err := redispkg.New(cfg.RedisURL)
	if err != nil {
		log.Fatal("Redis error:", err)
	}
	defer rdb.Close()

	seedSuperAdmin(db, cfg)

	app := server.New(server.Deps{Config: cfg, DB: db, Redis: rdb})

	log.Printf("TechXCar API v0.2.0 listening on :%s (env: %s)", cfg.Port, cfg.AppEnv)
	log.Fatal(app.Listen(":" + cfg.Port))
}

func seedSuperAdmin(db *database.DB, cfg *config.Config) {
	if cfg.InitialAdminEmail == "" || cfg.InitialAdminPassword == "" {
		return
	}
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	repo := tenant.NewRepository(db)
	existing, err := repo.GetSuperAdminByEmail(ctx, cfg.InitialAdminEmail)
	if err != nil || existing != nil {
		return
	}
	hash, err := auth.HashPassword(cfg.InitialAdminPassword)
	if err != nil {
		log.Printf("Warning: could not hash initial admin password: %v", err)
		return
	}
	if _, err := repo.CreateSuperAdmin(ctx, cfg.InitialAdminEmail, hash); err != nil {
		log.Printf("Warning: could not create initial super admin: %v", err)
		return
	}
	log.Printf("Initial super admin created: %s", cfg.InitialAdminEmail)
}