package model

import (
	"context"
	"fmt"
	"git.noahlan.cn/northlan/ntools-go/gorm-zero/gormc"
	"gorm.io/gorm"
)

var _ UserPlatformModel = (*customUserPlatformModel)(nil)

type (
	// UserPlatformModel is an interface to be customized, add more methods here,
	// and implement the added methods in customUserPlatformModel.
	UserPlatformModel interface {
		userPlatformModel
		// Transaction 开启事务，传入方法即可
		Transaction(ctx context.Context, tx *gorm.DB, fn func(tx *gorm.DB) error) error
		// InsertTx 事务插入
		InsertTx(ctx context.Context, tx *gorm.DB, data *UserPlatform) error
		// FindOneByPlatformAndPUid 查询平台用户
		FindOneByPlatformAndPUid(ctx context.Context, tx *gorm.DB, platform, pUid string) (*UserPlatform, error)
		// FindEmptyList 查询从未更新过平台信息的用户
		FindEmptyList(ctx context.Context, num int64) ([]UserPlatform, error)
		// FindUpdatableList 查询过期需要更新信息的用户
		FindUpdatableList(ctx context.Context, duration int64, num int64) ([]UserPlatform, error)
		// FindOneForRankByUserId 查找用户信息 用于排行榜展示
		FindOneForRankByUserId(ctx context.Context, uid int64) (*UserPlatformForRank, error)
	}

	UserPlatformForRank struct {
		UserId  int64  // 用户ID
		PUname  string // 平台用户名
		PAvatar string // 平台用户头像地址
	}

	customUserPlatformModel struct {
		*defaultUserPlatformModel
	}
)

func (m *customUserPlatformModel) InsertTx(ctx context.Context, tx *gorm.DB, data *UserPlatform) error {
	return withTx(ctx, m.conn, tx).Create(data).Error
}

// NewUserPlatformModel returns a model for the database table.
func NewUserPlatformModel(conn *gorm.DB) UserPlatformModel {
	return &customUserPlatformModel{
		defaultUserPlatformModel: newUserPlatformModel(conn),
	}
}

func (m *customUserPlatformModel) Transaction(ctx context.Context, tx *gorm.DB, fn func(tx *gorm.DB) error) error {
	return withTx(ctx, m.conn, tx).Transaction(func(tx *gorm.DB) error {
		return fn(tx)
	})
}

func (m *customUserPlatformModel) FindOneByPlatformAndPUid(ctx context.Context, tx *gorm.DB, platform, pUid string) (*UserPlatform, error) {
	db := withTx(ctx, m.conn, tx)

	var resp UserPlatform
	err := db.Model(&UserPlatform{}).Where("`platform` = ? AND `p_uid` = ?", platform, pUid).Take(&resp).Error
	switch err {
	case nil:
		return &resp, nil
	case gormc.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}

func (m *customUserPlatformModel) FindEmptyList(ctx context.Context, num int64) ([]UserPlatform, error) {
	var resp []UserPlatform
	err := m.conn.WithContext(ctx).
		Table(m.tableName()).
		Where("JSON_LENGTH(`p_info`) = 0 LIMIT ?", num).
		Find(&resp).Error
	switch err {
	case nil:
		return resp, nil
	case gormc.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}

func (m *customUserPlatformModel) FindUpdatableList(ctx context.Context, duration int64, num int64) ([]UserPlatform, error) {
	var resp []UserPlatform
	err := m.conn.WithContext(ctx).
		Table(m.tableName()).
		Where("`update_time` < (NOW() - INTERVAL ? HOUR) LIMIT ?", duration, num).
		Find(&resp).Error
	switch err {
	case nil:
		return resp, nil
	case gormc.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}

func (m *customUserPlatformModel) FindOneForRankByUserId(ctx context.Context, uid int64) (*UserPlatformForRank, error) {
	var resp UserPlatformForRank
	err := m.conn.WithContext(ctx).
		Table(m.table).
		Select(fmt.Sprintf("%s.user_id, %s.p_uname, %s.p_avatar", m.table, m.table, m.table)).
		Where("user_id = ?", uid).
		Take(&resp).Error
	switch err {
	case nil:
		return &resp, nil
	case gormc.ErrNotFound:
		return nil, ErrNotFound
	default:
		return nil, err
	}
}