-- db: wms2

-- ── Chart of Accounts ────────────────────────────────────────────────────────
CREATE TABLE `ac_account` (
  `id`           int(11)      NOT NULL AUTO_INCREMENT,
  `company_id`   int(11)      NOT NULL,
  `account_code` varchar(20)  NOT NULL,
  `account_name` varchar(255) NOT NULL,
  `account_type` ENUM('asset','liability','equity','revenue','expense') NOT NULL,
  `parent_code`  varchar(20)  DEFAULT NULL,
  `is_posting`   tinyint(1)   NOT NULL DEFAULT 1 COMMENT '0=header only, 1=can post',
  `status`       tinyint(1)   NOT NULL DEFAULT 1,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_company_account` (`company_id`, `account_code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ── Departments ───────────────────────────────────────────────────────────────
CREATE TABLE `ac_department` (
  `id`          int(11)      NOT NULL AUTO_INCREMENT,
  `company_id`  int(11)      NOT NULL,
  `dept_code`   varchar(20)  NOT NULL,
  `dept_name`   varchar(255) NOT NULL,
  `description` text         DEFAULT NULL,
  `status`      tinyint(1)   NOT NULL DEFAULT 1,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_company_dept` (`company_id`, `dept_code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ── Accounting Periods ────────────────────────────────────────────────────────
CREATE TABLE `ac_period` (
  `id`         int(11)                            NOT NULL AUTO_INCREMENT,
  `company_id` int(11)                            NOT NULL,
  `period`     varchar(7)                         NOT NULL COMMENT 'YYYY-MM',
  `status`     ENUM('open','closed','locked')     NOT NULL DEFAULT 'open',
  `closed_at`  datetime                           DEFAULT NULL,
  `locked_at`  datetime                           DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_company_period` (`company_id`, `period`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ── Journal Entry Headers ─────────────────────────────────────────────────────
CREATE TABLE `ac_journal` (
  `id`          int(11)      NOT NULL AUTO_INCREMENT,
  `company_id`  int(11)      NOT NULL,
  `je_number`   varchar(50)  NOT NULL,
  `period`      varchar(7)   NOT NULL COMMENT 'YYYY-MM',
  `je_date`     date         NOT NULL,
  `description` text         DEFAULT NULL,
  `source_type` varchar(50)  DEFAULT NULL COMMENT 'invoice, po, receipt, payment, manual',
  `source_id`   int(11)      DEFAULT NULL,
  `status`      tinyint(1)   NOT NULL DEFAULT 1 COMMENT '1=posted, 0=draft, -1=voided',
  `created_by`  int(11)      DEFAULT NULL,
  `created_at`  datetime     NOT NULL DEFAULT current_timestamp(),
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_company_je` (`company_id`, `je_number`),
  KEY `idx_period` (`company_id`, `period`),
  KEY `idx_source` (`company_id`, `source_type`, `source_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ── Journal Entry Lines ───────────────────────────────────────────────────────
CREATE TABLE `ac_journal_line` (
  `id`           int(11)       NOT NULL AUTO_INCREMENT,
  `company_id`   int(11)       NOT NULL,
  `journal_id`   int(11)       NOT NULL,
  `account_code` varchar(20)   NOT NULL,
  `dept_id`      int(11)       DEFAULT NULL,
  `description`  text          DEFAULT NULL,
  `debit`        decimal(15,2) NOT NULL DEFAULT 0.00,
  `credit`       decimal(15,2) NOT NULL DEFAULT 0.00,
  PRIMARY KEY (`id`),
  KEY `idx_journal` (`journal_id`),
  KEY `idx_account` (`company_id`, `account_code`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;

-- ── Period Balance Summary ────────────────────────────────────────────────────
-- Mirrors warehouse_balance: aggregated debit/credit per account+dept+period
CREATE TABLE `ac_balance` (
  `id`           int(11)       NOT NULL AUTO_INCREMENT,
  `company_id`   int(11)       NOT NULL,
  `period`       varchar(7)    NOT NULL COMMENT 'YYYY-MM',
  `account_code` varchar(20)   NOT NULL,
  `dept_id`      int(11)       DEFAULT NULL,
  `total_debit`  decimal(15,2) NOT NULL DEFAULT 0.00,
  `total_credit` decimal(15,2) NOT NULL DEFAULT 0.00,
  PRIMARY KEY (`id`),
  UNIQUE KEY `uq_balance` (`company_id`, `period`, `account_code`, `dept_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;