USE [JSDataMiddlePlatform];
GO

/*
  Template: 店铺周报
  Window: 上一个自然周 [week_start, week_end)
*/

DECLARE @week_start datetime2 = CAST(DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()) - 1, 0) AS datetime2);
DECLARE @week_end datetime2 = CAST(DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()), 0) AS datetime2);

IF OBJECT_ID('tempdb..#base') IS NOT NULL
    DROP TABLE #base;

SELECT
    NULLIF(a.undefined2, '') AS order_id,
    COALESCE(NULLIF(a.undefined8, ''), 'unknown') AS shop_name,
    CASE
        WHEN CHARINDEX('-', ISNULL(a.undefined8, '')) > 1
            THEN LEFT(a.undefined8, CHARINDEX('-', a.undefined8) - 1)
        ELSE 'unknown'
    END AS platform_name,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined20, '')) AS qty,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined21, '')) AS goods_amount,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined22, '')) AS goods_cost,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined26, '')) AS payment_amount,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined29, '')) AS actual_amount,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined31, '')) AS actual_cost,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined47, '')) AS apply_amount,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined50, '')) AS return_amount,
    TRY_CONVERT(decimal(18, 2), NULLIF(a.undefined52, '')) AS refund_amount,
    ISNULL(NULLIF(a.undefined62, ''), '') AS order_labels,
    a.createdAt AS created_at
INTO #base
FROM dbo.jst_goods_profit_kpi_items_afs AS a WITH (NOLOCK)
WHERE a.createdAt >= @week_start
  AND a.createdAt < @week_end
  AND ISNULL(NULLIF(a.undefined2, ''), '') <> ''
  AND ISNULL(NULLIF(a.undefined62, ''), '') NOT LIKE '%配件%'
  AND ISNULL(NULLIF(a.undefined62, ''), '') NOT LIKE '%特殊单%';

-- 1) 周总览
SELECT
    @week_start AS week_start,
    @week_end AS week_end,
    COUNT(*) AS afs_record_count,
    COUNT(DISTINCT order_id) AS order_count,
    SUM(ISNULL(qty, 0)) AS qty_sum,
    SUM(ISNULL(payment_amount, 0)) AS payment_amount,
    SUM(ISNULL(actual_amount, 0)) AS actual_amount,
    SUM(ISNULL(actual_cost, 0)) AS actual_cost,
    SUM(ISNULL(refund_amount, 0)) AS refund_amount,
    SUM(ISNULL(return_amount, 0)) AS return_amount
FROM #base;

-- 2) 平台周报
SELECT
    platform_name,
    COUNT(*) AS afs_record_count,
    COUNT(DISTINCT order_id) AS order_count,
    SUM(ISNULL(payment_amount, 0)) AS payment_amount,
    SUM(ISNULL(refund_amount, 0)) AS refund_amount,
    CASE
        WHEN SUM(ISNULL(payment_amount, 0)) = 0 THEN NULL
        ELSE SUM(ISNULL(refund_amount, 0)) / SUM(ISNULL(payment_amount, 0))
    END AS refund_rate,
    SUM(ISNULL(actual_amount, 0)) - SUM(ISNULL(actual_cost, 0)) AS gross_profit
FROM #base
GROUP BY platform_name
ORDER BY payment_amount DESC;

-- 3) 店铺 TOP30
SELECT TOP (30)
    shop_name,
    platform_name,
    COUNT(*) AS afs_record_count,
    COUNT(DISTINCT order_id) AS order_count,
    SUM(ISNULL(payment_amount, 0)) AS payment_amount,
    SUM(ISNULL(refund_amount, 0)) AS refund_amount,
    CASE
        WHEN SUM(ISNULL(payment_amount, 0)) = 0 THEN NULL
        ELSE SUM(ISNULL(refund_amount, 0)) / SUM(ISNULL(payment_amount, 0))
    END AS refund_rate,
    SUM(ISNULL(actual_amount, 0)) - SUM(ISNULL(actual_cost, 0)) AS gross_profit,
    CASE
        WHEN SUM(ISNULL(actual_amount, 0)) = 0 THEN NULL
        ELSE (SUM(ISNULL(actual_amount, 0)) - SUM(ISNULL(actual_cost, 0))) / SUM(ISNULL(actual_amount, 0))
    END AS gross_margin_rate
FROM #base
GROUP BY shop_name, platform_name
ORDER BY payment_amount DESC;

-- 4) 高退款风险店铺（门槛：订单数>=50）
SELECT
    shop_name,
    platform_name,
    COUNT(DISTINCT order_id) AS order_count,
    SUM(ISNULL(payment_amount, 0)) AS payment_amount,
    SUM(ISNULL(refund_amount, 0)) AS refund_amount,
    CASE
        WHEN SUM(ISNULL(payment_amount, 0)) = 0 THEN NULL
        ELSE SUM(ISNULL(refund_amount, 0)) / SUM(ISNULL(payment_amount, 0))
    END AS refund_rate
FROM #base
GROUP BY shop_name, platform_name
HAVING COUNT(DISTINCT order_id) >= 50
   AND CASE
           WHEN SUM(ISNULL(payment_amount, 0)) = 0 THEN 0
           ELSE SUM(ISNULL(refund_amount, 0)) / SUM(ISNULL(payment_amount, 0))
       END >= 0.15
ORDER BY refund_rate DESC, payment_amount DESC;