// 系统渠道、系统设置与方舟私有素材绑定。

package repository

import (
	"strings"
	"time"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"yingce/backend/internal/model"
)

func (r *Repository) SystemChannels(includeDisabled bool) ([]model.ModelChannel, error) {
	var channels []model.ModelChannel
	query := r.db.Order("sort_order asc, created_at asc, id asc").Where("scope = ?", model.ChannelScopeSystem)
	if !includeDisabled {
		query = query.Where("enabled = ?", true)
	}
	err := query.Find(&channels).Error
	return channels, err
}

func (r *Repository) HistoricalSystemChannelReferences() ([]model.ModelChannel, error) {
	var channels []model.ModelChannel
	err := r.db.Unscoped().Select("id", "name").Where("scope = ?", model.ChannelScopeSystem).Order("created_at asc").Find(&channels).Error
	return channels, err
}

func (r *Repository) AdminSystemChannels(keyword string, status string, limit int, offset int) ([]model.ModelChannel, int64, error) {
	var channels []model.ModelChannel
	var total int64
	query := r.db.Model(&model.ModelChannel{}).Where("scope = ?", model.ChannelScopeSystem)
	if value := strings.TrimSpace(keyword); value != "" {
		pattern := "%" + strings.ToLower(value) + "%"
		query = query.Where("lower(name) LIKE ? OR lower(base_url) LIKE ?", pattern, pattern)
	}
	if status == "enabled" {
		query = query.Where("enabled = ?", true)
	} else if status == "disabled" {
		query = query.Where("enabled = ?", false)
	}
	if err := query.Count(&total).Error; err != nil {
		return nil, 0, err
	}
	if err := query.Order("sort_order asc, created_at asc, id asc").Limit(limit).Offset(offset).Find(&channels).Error; err != nil {
		return nil, 0, err
	}
	return channels, total, nil
}

func (r *Repository) AdminSystemChannelReferences() ([]model.ModelChannel, error) {
	var channels []model.ModelChannel
	err := r.db.Select("id", "name", "enabled").Where("scope = ?", model.ChannelScopeSystem).Order("created_at asc").Find(&channels).Error
	return channels, err
}

func (r *Repository) SystemChannel(id string) (*model.ModelChannel, error) {
	var channel model.ModelChannel
	if err := r.db.First(&channel, "id = ? AND scope = ? AND enabled = ?", id, model.ChannelScopeSystem, true).Error; err != nil {
		return nil, err
	}
	return &channel, nil
}

func (r *Repository) AdminSystemChannel(id string) (*model.ModelChannel, error) {
	var channel model.ModelChannel
	if err := r.db.First(&channel, "id = ? AND scope = ?", id, model.ChannelScopeSystem).Error; err != nil {
		return nil, err
	}
	return &channel, nil
}

func (r *Repository) DeleteSystemChannel(id string) error {
	now := time.Now()
	return r.db.Transaction(func(tx *gorm.DB) error {
		channelResult := tx.Model(&model.ModelChannel{}).
			Where("id = ? AND scope = ?", id, model.ChannelScopeSystem).
			Updates(map[string]any{"api_key": "", "secret_key": "", "enabled": false, "updated_at": now})
		if channelResult.Error != nil {
			return channelResult.Error
		}
		if channelResult.RowsAffected != 1 {
			return gorm.ErrRecordNotFound
		}
		if err := tx.Model(&model.ChannelModel{}).Where("channel_id = ?", id).Updates(map[string]any{"enabled": false, "updated_at": now}).Error; err != nil {
			return err
		}
		if err := tx.Where("channel_id = ?", id).Delete(&model.ChannelModel{}).Error; err != nil {
			return err
		}
		return tx.Where("id = ? AND scope = ?", id, model.ChannelScopeSystem).Delete(&model.ModelChannel{}).Error
	})
}

func (r *Repository) ApiCallLogs(userID string, admin bool, limit int) ([]model.ApiCallLog, error) {
	var logs []model.ApiCallLog
	if limit <= 0 || limit > 200 {
		limit = 100
	}
	query := r.db.Order("created_at desc").Limit(limit)
	if !admin {
		query = query.Where("user_id = ?", userID)
	}
	err := query.Omit("RequestBody", "ResponseBody").Find(&logs).Error
	return logs, err
}

func (r *Repository) SystemSetting(key string) (*model.SystemSetting, error) {
	var setting model.SystemSetting
	if err := r.db.First(&setting, "key = ?", key).Error; err != nil {
		return nil, err
	}
	return &setting, nil
}

func (r *Repository) SystemSettingOptional(key string) (*model.SystemSetting, error) {
	var setting model.SystemSetting
	if err := r.db.Where("key = ?", key).Limit(1).Find(&setting).Error; err != nil {
		return nil, err
	}
	if setting.Key == "" {
		return nil, nil
	}
	return &setting, nil
}

func (r *Repository) SaveSystemSetting(setting *model.SystemSetting) error {
	return r.db.Save(setting).Error
}

func (r *Repository) SaveSystemSettings(settings ...*model.SystemSetting) error {
	return r.db.Transaction(func(tx *gorm.DB) error {
		for _, setting := range settings {
			if err := tx.Save(setting).Error; err != nil {
				return err
			}
		}
		return nil
	})
}

func (r *Repository) ArkPrivateAssetBinding(resourceID string, projectName string) (*model.ArkPrivateAssetBinding, error) {
	var binding model.ArkPrivateAssetBinding
	if err := r.db.Where("resource_id = ? AND project_name = ?", resourceID, projectName).First(&binding).Error; err != nil {
		return nil, err
	}
	return &binding, nil
}

// CreateArkPrivateAssetBinding establishes a single uploader for a resource
// and Ark Project. Other workers can wait for that binding instead of
// importing the same image repeatedly.
func (r *Repository) CreateArkPrivateAssetBinding(binding *model.ArkPrivateAssetBinding) (bool, error) {
	result := r.db.Clauses(clause.OnConflict{
		Columns:   []clause.Column{{Name: "resource_id"}, {Name: "project_name"}},
		DoNothing: true,
	}).Create(binding)
	if result.Error != nil {
		return false, result.Error
	}
	return result.RowsAffected == 1, nil
}

func (r *Repository) SaveArkPrivateAssetBinding(binding *model.ArkPrivateAssetBinding) error {
	return r.db.Save(binding).Error
}

func (r *Repository) DeleteSystemSetting(key string) error {
	return r.db.Delete(&model.SystemSetting{}, "key = ?", key).Error
}