-- 开票申请商品行补齐不含税金额与含税合计字段。
-- 使用 information_schema 判断字段是否存在，重复执行不会报重复列错误。
SET @invoice_line_schema = DATABASE();

SET @invoice_line_sql = (
  SELECT IF(
    COUNT(*) > 0,
    'ALTER TABLE `blade_invoice_application_line` MODIFY COLUMN `unit_price_no_tax` decimal(18,2) DEFAULT NULL',
    'SELECT 1'
  )
  FROM information_schema.columns
  WHERE table_schema = @invoice_line_schema
    AND table_name = 'blade_invoice_application_line'
    AND column_name = 'unit_price_no_tax'
    AND (numeric_precision <> 18 OR numeric_scale <> 2)
);
PREPARE invoice_line_stmt FROM @invoice_line_sql;
EXECUTE invoice_line_stmt;
DEALLOCATE PREPARE invoice_line_stmt;

SET @invoice_line_sql = (
  SELECT IF(
    COUNT(*) = 0,
    'ALTER TABLE `blade_invoice_application_line` ADD COLUMN `amount_no_tax` decimal(18,2) NOT NULL DEFAULT ''0.00'' COMMENT ''不含税金额'' AFTER `unit_price_no_tax`',
    'SELECT 1'
  )
  FROM information_schema.columns
  WHERE table_schema = @invoice_line_schema
    AND table_name = 'blade_invoice_application_line'
    AND column_name = 'amount_no_tax'
);
PREPARE invoice_line_stmt FROM @invoice_line_sql;
EXECUTE invoice_line_stmt;
DEALLOCATE PREPARE invoice_line_stmt;

SET @invoice_line_sql = (
  SELECT IF(
    COUNT(*) = 0,
    'ALTER TABLE `blade_invoice_application_line` ADD COLUMN `total_amount` decimal(18,2) NOT NULL DEFAULT ''0.00'' COMMENT ''含税合计'' AFTER `tax_amount`',
    'SELECT 1'
  )
  FROM information_schema.columns
  WHERE table_schema = @invoice_line_schema
    AND table_name = 'blade_invoice_application_line'
    AND column_name = 'total_amount'
);
PREPARE invoice_line_stmt FROM @invoice_line_sql;
EXECUTE invoice_line_stmt;
DEALLOCATE PREPARE invoice_line_stmt;

UPDATE `blade_invoice_application_line`
SET `amount_no_tax` = ROUND(
  `amount_with_tax` / (1 + `tax_rate` / 100),
  2
)
WHERE `amount_no_tax` = 0
  AND `amount_with_tax` > 0;

UPDATE `blade_invoice_application_line`
SET `total_amount` = ROUND(`amount_no_tax` + `tax_amount`, 2),
    `amount_with_tax` = ROUND(`amount_no_tax` + `tax_amount`, 2);