package model

import (
	"context"
	"errors"
	"fmt"
	"github.com/zeromicro/go-zero/core/stores/cache"
	"github.com/zeromicro/go-zero/core/stores/sqlc"
	"github.com/zeromicro/go-zero/core/stores/sqlx"
	"youtu_server/game_open_api/internal/types"
)

var _ GameScoreModel = (*customGameScoreModel)(nil)

const (
	cacheEcpmRankListPrefix = "cache:ecpm:game:rankList:appId:"
	cacheEcpmUserRankPrefix = "cache:ecpm:game:userRank:userId:"
)

type (
	// GameScoreModel is an interface to be customized, add more methods here,
	// and implement the added methods in customGameScoreModel.
	GameScoreModel interface {
		gameScoreModel
		GetRankList(ctx context.Context, appId uint64, userId uint64) ([]types.RankingData, error)
		GetUserRank(ctx context.Context, appId uint64, userId uint64) (*types.RankingData, error)
	}

	customGameScoreModel struct {
		*defaultGameScoreModel
	}
)

// NewGameScoreModel returns a model for the database table.
func NewGameScoreModel(conn sqlx.SqlConn, c cache.CacheConf, opts ...cache.Option) GameScoreModel {
	return &customGameScoreModel{
		defaultGameScoreModel: newGameScoreModel(conn, c, opts...),
	}
}

func (m *defaultGameScoreModel) GetRankList(ctx context.Context, appId uint64, userId uint64) (resp []types.RankingData, err error) {
	ecpmGameScoreAppUserIdKey := fmt.Sprintf("%s%v", cacheEcpmRankListPrefix, appId)
	err = m.QueryRowCtx(ctx, &resp, ecpmGameScoreAppUserIdKey, func(ctx context.Context, conn sqlx.SqlConn, v any) error {
		query := "SELECT game_score.score,app_user.nickname,app_user.avatar,game_score.app_user_id,rank() over(ORDER BY game_score.score desc) t_rank FROM `game_score` JOIN app_user ON app_user.id=game_score.app_user_id WHERE game_score.app_account=? ORDER BY game_score.score DESC LIMIT 20"
		return conn.QueryRowsPartialCtx(ctx, v, query, appId)
	})
	switch {
	case err == nil:
		return resp, nil
	case errors.Is(err, sqlc.ErrNotFound):
		return nil, ErrNotFound
	default:
		return nil, err
	}
}

func (m *defaultGameScoreModel) GetUserRank(ctx context.Context, appId uint64, userId uint64) (resp *types.RankingData, err error) {
	ecpmGameScoreAppUserIdKey := fmt.Sprintf("%s%v", cacheEcpmUserRankPrefix, userId)
	var res []types.RankingData
	err = m.QueryRowCtx(ctx, &res, ecpmGameScoreAppUserIdKey, func(ctx context.Context, conn sqlx.SqlConn, v any) error {
		query := `SELECT
  app_user.nickname,
  app_user.avatar,
  gs.score,
  gs.app_user_id,
  gs.t_rank
FROM
  (
    SELECT
      game_score.score,
      game_score.app_user_id,
      game_score.app_account,
      rank() over (ORDER BY game_score.score DESC) t_rank 
    FROM
  game_score) AS gs
  LEFT JOIN app_user ON app_user.id = gs.app_user_id 
  AND gs.app_account = ? 
WHERE
  gs.app_user_id = ? 
  LIMIT 1 `
		return conn.QueryRowsPartialCtx(ctx, v, query, appId, userId)
	})
	switch {
	case err == nil:
		if len(res) == 1 {
			resp = &res[0]
		}
		return resp, nil
	case errors.Is(err, sqlc.ErrNotFound):
		return nil, ErrNotFound
	default:
		return nil, err
	}
}