package database

import (
	"CatsOfMastodonBotGo/internal/config"
	"CatsOfMastodonBotGo/internal/domain"
	"fmt"
	"os"

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

func Connect(cfg *config.Config) (*gorm.DB, error) {
	var db *gorm.DB
	var err error = nil

	if cfg.DBEngine == "sqlite" {
		_, err = os.ReadDir("data")
		if err != nil {
			err = os.Mkdir("data", 0755)
			if err != nil {
				return nil, err
			}
		}
		db, err = gorm.Open(sqlite.Open("data/caom.db"), &gorm.Config{})
		if err != nil {
			return nil, err
		}
	} else {
		dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=utf8mb4&parseTime=True&loc=Local",
			cfg.DBUser,
			cfg.DBPassword,
			cfg.DBHost,
			cfg.DBPort,
			cfg.DBName)
		db, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
		if err != nil {
			return nil, err
		}

		sqlDB, err := db.DB()
		if err != nil {
			return nil, err
		}
		sqlDB.SetMaxOpenConns(100)
		sqlDB.SetMaxIdleConns(10)
	}

	// Migrate the schema
	if err := db.AutoMigrate(&domain.Post{}, &domain.MediaAttachment{}, &domain.Account{}); err != nil {
		return nil, err
	}
	return db, nil
}