package repositories

import (
	"database/sql"
	"log"

	"github.com/niangaodev/art-code/config"
	"github.com/niangaodev/art-code/models"
)

// GetSettings 获取所有系统配置
func GetSettings() ([]models.Setting, error) {
	query := "SELECT id, key_name, value, description, created_at, updated_at FROM settings ORDER BY key_name"
	rows, err := config.DB.Query(query)
	if err != nil {
		log.Printf("Error querying settings: %v", err)
		return nil, err
	}
	defer rows.Close()

	var settings []models.Setting
	for rows.Next() {
		var setting models.Setting
		if err := rows.Scan(
			&setting.ID,
			&setting.KeyName,
			&setting.Value,
			&setting.Description,
			&setting.CreatedAt,
			&setting.UpdatedAt,
		); err != nil {
			log.Printf("Error scanning setting: %v", err)
			continue
		}
		settings = append(settings, setting)
	}

	return settings, nil
}

// GetSettingByKey 根据键名获取系统配置
func GetSettingByKey(keyName string) (*models.Setting, error) {
	query := "SELECT id, key_name, value, description, created_at, updated_at FROM settings WHERE key_name = ?"
	row := config.DB.QueryRow(query, keyName)

	var setting models.Setting
	if err := row.Scan(
		&setting.ID,
		&setting.KeyName,
		&setting.Value,
		&setting.Description,
		&setting.CreatedAt,
		&setting.UpdatedAt,
	); err != nil {
		if err == sql.ErrNoRows {
			return nil, nil
		}
		log.Printf("Error scanning setting by key: %v", err)
		return nil, err
	}

	return &setting, nil
}

// UpdateSetting 更新系统配置
func UpdateSetting(setting *models.Setting) error {
	query := `
		UPDATE settings SET value = ?, description = ?, updated_at = NOW()
		WHERE key_name = ?
	`
	_, err := config.DB.Exec(
		query,
		setting.Value,
		setting.Description,
		setting.KeyName,
	)
	if err != nil {
		log.Printf("Error updating setting: %v", err)
		return err
	}

	return nil
}

// CreateSetting 创建系统配置
func CreateSetting(setting *models.Setting) error {
	query := `
		INSERT INTO settings (key_name, value, description, created_at, updated_at)
		VALUES (?, ?, ?, NOW(), NOW())
	`
	result, err := config.DB.Exec(
		query,
		setting.KeyName,
		setting.Value,
		setting.Description,
	)
	if err != nil {
		log.Printf("Error creating setting: %v", err)
		return err
	}

	// 获取自增ID
	id, err := result.LastInsertId()
	if err != nil {
		log.Printf("Error getting last insert ID: %v", err)
		return err
	}
	setting.ID = uint(id)

	return nil
}

// DeleteSetting 删除系统配置
func DeleteSetting(keyName string) error {
	query := "DELETE FROM settings WHERE key_name = ?"
	_, err := config.DB.Exec(query, keyName)
	if err != nil {
		log.Printf("Error deleting setting: %v", err)
		return err
	}

	return nil
}

// BuildSettingResponse 构建系统配置响应
func BuildSettingResponse(setting *models.Setting) *models.SettingResponse {
	return &models.SettingResponse{
		ID:          setting.ID,
		KeyName:     setting.KeyName,
		Value:       setting.Value,
		Description: setting.Description,
		CreatedAt:   setting.CreatedAt.Format("2006-01-02 15:04:05"),
		UpdatedAt:   setting.UpdatedAt.Format("2006-01-02 15:04:05"),
	}
}

// BuildSettingsResponse 构建系统配置列表响应
func BuildSettingsResponse(settings []models.Setting) []models.SettingResponse {
	var responses []models.SettingResponse
	for _, setting := range settings {
		responses = append(responses, *BuildSettingResponse(&setting))
	}
	return responses
}