package database

import (
	"fmt"
	"time"

	"ezops/internal/config"
	"ezops/internal/models"

	"gorm.io/driver/mysql"
	"gorm.io/driver/postgres"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
	"gorm.io/gorm/logger"
)

// New 创建数据库连接
func New(cfg config.DatabaseConfig) (*gorm.DB, error) {
	var dialector gorm.Dialector

	switch cfg.Driver {
	case "mysql":
		dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=True&loc=Local",
			cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.DBName, cfg.Charset)
		dialector = mysql.Open(dsn)
	case "postgres":
		dsn := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable",
			cfg.Host, cfg.Port, cfg.User, cfg.Password, cfg.DBName)
		dialector = postgres.Open(dsn)
	case "sqlite":
		dialector = sqlite.Open(cfg.DBName)
	default:
		return nil, fmt.Errorf("unsupported database driver: %s", cfg.Driver)
	}

	db, err := gorm.Open(dialector, &gorm.Config{
		Logger: logger.Default.LogMode(logger.Silent),
	})
	if err != nil {
		return nil, err
	}

	// 设置连接池
	sqlDB, err := db.DB()
	if err != nil {
		return nil, err
	}

	sqlDB.SetMaxOpenConns(cfg.MaxConn)
	sqlDB.SetMaxIdleConns(cfg.MaxIdle)
	sqlDB.SetConnMaxLifetime(time.Hour)

	return db, nil
}

// AutoMigrate 自动迁移数据库表
func AutoMigrate(db *gorm.DB) error {
	return db.AutoMigrate(
		&models.User{},
		&models.Role{},
		&models.Permission{},
		&models.Server{},
		&models.Cloud{},
		&models.CloudAccount{},
		&models.Region{},
		&models.Domain{},
		&models.K8sCluster{},
		&models.K8sNode{},
		&models.K8sPod{},
		&models.K8sDeployment{},
		&models.K8sService{},
		&models.K8sIngress{},
		&models.AlertRule{},
		&models.AlertEvent{},
		&models.NotifyChannel{},
		&models.MetricData{},
		&models.Pipeline{},
		&models.PipelineRun{},
		&models.AppRelease{},
		&models.CronJob{},
		&models.Script{},
		&models.TaskExecution{},
		&models.Playbook{},
		&models.ApprovalTemplate{},
		&models.ApprovalProcess{},
		&models.ApprovalStep{},
		&models.NavigationGroup{},
		&models.NavigationLink{},
		&models.AuditLog{},
		&models.LDAPConfig{},
		&models.ResourceModel{},
	)
}