package models

import (
	"fmt"
	"time"

	"giteapm/config"

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

var DB *gorm.DB

func InitDB(cfg config.DatabaseConfig) (*gorm.DB, error) {
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=True&loc=Local",
		cfg.Username, cfg.Password, cfg.Host, cfg.Port, cfg.Database, cfg.Charset)

	var err error
	DB, err = gorm.Open(mysql.Open(dsn), &gorm.Config{
		Logger: logger.Default.LogMode(logger.Info),
	})
	if err != nil {
		return nil, fmt.Errorf("连接数据库失败: %v", err)
	}

	sqlDB, err := DB.DB()
	if err != nil {
		return nil, fmt.Errorf("获取底层数据库连接失败: %v", err)
	}

	sqlDB.SetMaxIdleConns(10)
	sqlDB.SetMaxOpenConns(100)
	sqlDB.SetConnMaxLifetime(time.Hour)

	if err := autoMigrate(); err != nil {
		return nil, fmt.Errorf("数据库迁移失败: %v", err)
	}

	return DB, nil
}

func autoMigrate() error {
	return DB.AutoMigrate(
		&User{},
		&Project{},
		&ProjectMember{},
		&Epic{},
		&Story{},
		&Task{},
		&GiteaRelation{},
		&Sprint{},
		&Comment{},
		&Tag{},
		&EntityTag{},
		&TimeLog{},
		&WebhookConfig{},
	)
}