package storage

import (
	"context"
	"crypto/sha1"
	"database/sql"
	"encoding/hex"
	"strings"
	"time"

	"github.com/shopspring/decimal"

	"dashboard-cdc-worker/internal/dashboard"
)

func (r *MySQLRepository) upsertGameEventFact(ctx context.Context, tx *sql.Tx, c dashboard.Contribution, storageZone *time.Location) error {
	if !isGameFact(c) {
		return nil
	}
	if storageZone == nil {
		storageZone = time.UTC
	}
	deltaSign := c.DeltaSign
	if deltaSign == 0 {
		deltaSign = 1
	}
	sign := decimal.NewFromInt(int64(deltaSign))
	consume := c.GameConsume.Mul(sign)
	payout := c.GamePayoutBy.Mul(sign)
	profit := c.GameProfit.Mul(sign)
	orderCount := c.GameOrder * int64(deltaSign)
	_, err := tx.ExecContext(ctx, `
INSERT INTO dashboard_game_event_fact (
  fact_key, source_schema, source_table, source_pk, source_action,
  sys_origin, stat_date, event_time, user_id, country_code, country_name,
  game_provider, game_id, game_name, consume_amount, payout_amount, profit_amount, order_count
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE
  source_action = VALUES(source_action),
  sys_origin = VALUES(sys_origin),
  stat_date = VALUES(stat_date),
  event_time = VALUES(event_time),
  user_id = VALUES(user_id),
  country_code = VALUES(country_code),
  country_name = VALUES(country_name),
  game_provider = VALUES(game_provider),
  game_id = VALUES(game_id),
  game_name = VALUES(game_name),
  consume_amount = VALUES(consume_amount),
  payout_amount = VALUES(payout_amount),
  profit_amount = VALUES(profit_amount),
  order_count = VALUES(order_count),
  updated_at = NOW()
`, gameFactKey(c), c.SourceSchema, c.SourceTable, c.SourcePK, c.SourceAction,
		c.SysOrigin, dashboard.DailyDate(c.EventTime, storageZone), c.EventTime, c.UserID,
		c.Country.Code, c.Country.Name, c.GameProvider, c.GameID, c.GameName,
		consume, payout, profit, orderCount)
	return err
}

func isGameFact(c dashboard.Contribution) bool {
	return !c.EventTime.IsZero() &&
		c.SysOrigin != "" &&
		c.UserID != 0 &&
		c.GameProvider != "" &&
		c.GameID != "" &&
		(!c.GameConsume.IsZero() || !c.GamePayoutBy.IsZero() || !c.GameProfit.IsZero() || c.GameOrder != 0 || c.GameUser)
}

func gameFactKey(c dashboard.Contribution) string {
	parts := []string{c.EventKey, c.SourceSchema, c.SourceTable, c.SourcePK, c.SourceAction}
	raw := strings.Join(parts, "|")
	if len(raw) <= 255 && strings.Trim(raw, "|") != "" {
		return raw
	}
	sum := sha1.Sum([]byte(raw))
	return "game-fact:" + hex.EncodeToString(sum[:])
}