-- rename prc_bill -> prc_order_bill, prc_bill_fee -> prc_income_bill_fee, add prc_pay_bill_fee
SET NAMES utf8mb4;

SET @db := DATABASE();

SET @fk := (
  SELECT CONSTRAINT_NAME FROM information_schema.TABLE_CONSTRAINTS
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_bill_fee' AND CONSTRAINT_TYPE = 'FOREIGN KEY'
  LIMIT 1
);
SET @sql := IF(@fk IS NOT NULL,
  CONCAT('ALTER TABLE prc_bill_fee DROP FOREIGN KEY `', @fk, '`'),
  'SELECT 1');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @has_old := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_bill'
);
SET @has_new := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_order_bill'
);
SET @sql := IF(@has_old > 0 AND @has_new = 0, 'RENAME TABLE prc_bill TO prc_order_bill', 'SELECT 1');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @has_old_fee := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_bill_fee'
);
SET @has_new_fee := (
  SELECT COUNT(*) FROM information_schema.TABLES
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_income_bill_fee'
);
SET @sql := IF(@has_old_fee > 0 AND @has_new_fee = 0, 'RENAME TABLE prc_bill_fee TO prc_income_bill_fee', 'SELECT 1');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @fk2 := (
  SELECT CONSTRAINT_NAME FROM information_schema.TABLE_CONSTRAINTS
  WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'prc_income_bill_fee'
    AND CONSTRAINT_TYPE = 'FOREIGN KEY'
  LIMIT 1
);
SET @sql := IF(@fk2 IS NULL,
  'ALTER TABLE prc_income_bill_fee ADD CONSTRAINT fk_income_bill_fee_order FOREIGN KEY (bill_id) REFERENCES prc_order_bill (bill_id) ON DELETE CASCADE',
  'SELECT 1');
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

ALTER TABLE prc_order_bill COMMENT = '订单信息主表';
ALTER TABLE prc_income_bill_fee COMMENT = '应收费用明细';


CREATE TABLE IF NOT EXISTS prc_pay_bill_fee (
  fee_id         VARCHAR(36)     NOT NULL                COMMENT '费用明细ID',
  bill_id        VARCHAR(36)     NOT NULL                COMMENT '计费ID',
  fee_type       VARCHAR(30)     NOT NULL                COMMENT '费用类型(字典bms_fee_type)',
  fee_name       VARCHAR(100)             DEFAULT NULL    COMMENT '费用名称',
  sc_id          BIGINT(20)      NOT NULL DEFAULT 0      COMMENT '附加费配置ID',
  amount         DECIMAL(12,2)   NOT NULL DEFAULT 0      COMMENT '金额',
  currency       VARCHAR(10)     NOT NULL DEFAULT 'CNY'  COMMENT '币种',
  round_mode     VARCHAR(20)              DEFAULT 'HALF_UP' COMMENT '取值方式',
  remark         VARCHAR(500)             DEFAULT NULL    COMMENT '备注',
  create_time     DATETIME                 DEFAULT NULL    COMMENT '创建时间',
  PRIMARY KEY (fee_id),
  UNIQUE KEY uk_pay_bill_fee_item (bill_id, fee_type, sc_id),
  INDEX idx_pay_bill_fee_type (fee_type),
  CONSTRAINT fk_pay_bill_fee_order FOREIGN KEY (bill_id) REFERENCES prc_order_bill (bill_id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='应付费用明细';