SET NAMES utf8mb4;
USE baiyue_firstleg;

/* 装柜证据、PDA 拣货复核和派送完成。五类证据按有效记录计数，同类型允许多图追加；作废记录保留审计。 */
CREATE TABLE IF NOT EXISTS fl_loading_evidence (
  id BIGINT UNSIGNED NOT NULL,
  tenant_id BIGINT UNSIGNED NOT NULL,
  inbound_id BIGINT UNSIGNED NOT NULL,
  evidence_type VARCHAR(32) NOT NULL COMMENT 'PHOTO_STEP_1空仓/PHOTO_STEP_2半仓/PHOTO_STEP_3满仓/PHOTO_STEP_4锁仓/SEAL带锁码照',
  file_id BIGINT UNSIGNED NOT NULL COMMENT 'File 服务逻辑文件ID',
  file_name VARCHAR(255) NULL,
  seal_no VARCHAR(64) NULL,
  remark VARCHAR(1000) NULL,
  status VARCHAR(16) NOT NULL DEFAULT 'ACTIVE' COMMENT 'ACTIVE/VOID，作废不硬删除',
  void_reason VARCHAR(500) NULL,
  voided_by BIGINT UNSIGNED NULL,
  voided_by_name VARCHAR(64) NULL,
  voided_at DATETIME(3) NULL,
  version INT NOT NULL DEFAULT 0,
  created_by BIGINT UNSIGNED NOT NULL,
  created_by_name VARCHAR(64) NULL,
  updated_by BIGINT UNSIGNED NOT NULL,
  updated_by_name VARCHAR(64) NULL,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
  PRIMARY KEY (id),
  KEY idx_loading_evidence_type (tenant_id, inbound_id, evidence_type, status),
  KEY idx_loading_evidence_seal (tenant_id, seal_no, status),
  KEY idx_loading_evidence_time (tenant_id, inbound_id, updated_at),
  CONSTRAINT fk_loading_evidence_inbound FOREIGN KEY (inbound_id) REFERENCES fl_inbound_order (id)
) ENGINE=InnoDB COMMENT='订单装柜空仓/半仓/满仓/锁仓/带锁码照证据';

/* Repeatable migration for installations that already created the single-slot table. */
DROP PROCEDURE IF EXISTS phase3_loading_add_column;
DELIMITER $$
CREATE PROCEDURE phase3_loading_add_column(IN p_column VARCHAR(64), IN p_definition VARCHAR(512))
BEGIN
  IF NOT EXISTS (
    SELECT 1 FROM information_schema.columns
    WHERE table_schema=DATABASE() AND table_name='fl_loading_evidence' AND column_name=p_column
  ) THEN
    SET @phase3_loading_ddl = CONCAT('ALTER TABLE fl_loading_evidence ADD COLUMN `', p_column, '` ', p_definition);
    PREPARE phase3_loading_stmt FROM @phase3_loading_ddl;
    EXECUTE phase3_loading_stmt;
    DEALLOCATE PREPARE phase3_loading_stmt;
  END IF;
END$$
DELIMITER ;
CALL phase3_loading_add_column('status', 'VARCHAR(16) NOT NULL DEFAULT ''ACTIVE'' COMMENT ''ACTIVE/VOID，作废不硬删除''');
CALL phase3_loading_add_column('void_reason', 'VARCHAR(500) NULL');
CALL phase3_loading_add_column('voided_by', 'BIGINT UNSIGNED NULL');
CALL phase3_loading_add_column('voided_by_name', 'VARCHAR(64) NULL');
CALL phase3_loading_add_column('voided_at', 'DATETIME(3) NULL');
DROP PROCEDURE IF EXISTS phase3_loading_add_column;

SET @phase3_loading_has_legacy_type_index = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema=DATABASE() AND table_name='fl_loading_evidence' AND index_name='uk_loading_evidence_type'
);
SET @phase3_loading_drop_legacy_type_index = IF(@phase3_loading_has_legacy_type_index > 0,
  'ALTER TABLE fl_loading_evidence DROP INDEX uk_loading_evidence_type', 'SELECT 1');
PREPARE phase3_loading_drop_stmt FROM @phase3_loading_drop_legacy_type_index;
EXECUTE phase3_loading_drop_stmt;
DEALLOCATE PREPARE phase3_loading_drop_stmt;

SET @phase3_loading_has_type_index = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema=DATABASE() AND table_name='fl_loading_evidence' AND index_name='idx_loading_evidence_type'
);
SET @phase3_loading_add_type_index = IF(@phase3_loading_has_type_index = 0,
  'ALTER TABLE fl_loading_evidence ADD KEY idx_loading_evidence_type (tenant_id, inbound_id, evidence_type, status)', 'SELECT 1');
PREPARE phase3_loading_type_stmt FROM @phase3_loading_add_type_index;
EXECUTE phase3_loading_type_stmt;
DEALLOCATE PREPARE phase3_loading_type_stmt;

SET @phase3_loading_has_legacy_seal_index = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema=DATABASE() AND table_name='fl_loading_evidence' AND index_name='uk_loading_evidence_seal'
);
SET @phase3_loading_drop_legacy_seal_index = IF(@phase3_loading_has_legacy_seal_index > 0,
  'ALTER TABLE fl_loading_evidence DROP INDEX uk_loading_evidence_seal', 'SELECT 1');
PREPARE phase3_loading_drop_seal_stmt FROM @phase3_loading_drop_legacy_seal_index;
EXECUTE phase3_loading_drop_seal_stmt;
DEALLOCATE PREPARE phase3_loading_drop_seal_stmt;

SET @phase3_loading_has_seal_index = (
  SELECT COUNT(*) FROM information_schema.statistics
  WHERE table_schema=DATABASE() AND table_name='fl_loading_evidence' AND index_name='idx_loading_evidence_seal'
);
SET @phase3_loading_add_seal_index = IF(@phase3_loading_has_seal_index = 0,
  'ALTER TABLE fl_loading_evidence ADD KEY idx_loading_evidence_seal (tenant_id, seal_no, status)', 'SELECT 1');
PREPARE phase3_loading_seal_stmt FROM @phase3_loading_add_seal_index;
EXECUTE phase3_loading_seal_stmt;
DEALLOCATE PREPARE phase3_loading_seal_stmt;

CREATE TABLE IF NOT EXISTS fl_loading_operation (
  id BIGINT UNSIGNED NOT NULL,
  tenant_id BIGINT UNSIGNED NOT NULL,
  inbound_id BIGINT UNSIGNED NOT NULL,
  operator_id BIGINT UNSIGNED NOT NULL,
  operation VARCHAR(48) NOT NULL,
  idempotency_key VARCHAR(128) NOT NULL,
  request_hash CHAR(64) NOT NULL,
  status VARCHAR(16) NOT NULL DEFAULT 'PROCESSING',
  result_json JSON NULL,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  completed_at DATETIME(3) NULL,
  PRIMARY KEY (id),
  UNIQUE KEY uk_loading_operation (tenant_id, inbound_id, operator_id, operation, idempotency_key),
  KEY idx_loading_operation_time (tenant_id, inbound_id, created_at),
  CONSTRAINT fk_loading_operation_inbound FOREIGN KEY (inbound_id) REFERENCES fl_inbound_order (id)
) ENGINE=InnoDB COMMENT='装柜与派送写操作幂等记录';

CREATE TABLE IF NOT EXISTS fl_inbound_loading_pick_task (
  id BIGINT UNSIGNED NOT NULL,
  tenant_id BIGINT UNSIGNED NOT NULL,
  inbound_id BIGINT UNSIGNED NOT NULL,
  status VARCHAR(24) NOT NULL DEFAULT 'PENDING' COMMENT 'PENDING/IN_PROGRESS/COMPLETED',
  version INT NOT NULL DEFAULT 0,
  expected_count INT UNSIGNED NULL,
  picked_count INT UNSIGNED NULL,
  remark VARCHAR(1000) NULL,
  updated_by BIGINT UNSIGNED NOT NULL,
  updated_by_name VARCHAR(64) NULL,
  created_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
  PRIMARY KEY (id),
  UNIQUE KEY uk_loading_pick_tenant_inbound (tenant_id, inbound_id),
  KEY idx_loading_pick_status (tenant_id, status, updated_at),
  CONSTRAINT fk_loading_pick_inbound FOREIGN KEY (inbound_id) REFERENCES fl_inbound_order (id)
) ENGINE=InnoDB COMMENT='PDA拣货任务及结果';