-- Table from contract.json
CREATE TABLE IF NOT EXISTS `contract` (
  `id` VARCHAR(32) NOT NULL COMMENT '合同ID，主键',
  `contract_number` VARCHAR(50) NOT NULL COMMENT '合同编号，唯一标识',
  `title` VARCHAR(200) NOT NULL COMMENT '合同标题',
  `party_a` VARCHAR(100) NOT NULL COMMENT '甲方（我方）',
  `party_b` VARCHAR(100) NOT NULL COMMENT '乙方（对方）',
  `contract_type` VARCHAR(32) NOT NULL COMMENT '合同类型，引用appcodes表的id',
  `status` VARCHAR(20) NOT NULL DEFAULT 'draft' COMMENT '合同状态：draft-草稿, active-生效, expired-过期, terminated-终止',
  `amount` DECIMAL(15,2) COMMENT '合同金额',
  `start_date` DATE NOT NULL COMMENT '合同开始日期',
  `end_date` DATE NOT NULL COMMENT '合同结束日期',
  `sign_date` DATE COMMENT '签署日期',
  `owner_id` VARCHAR(32) NOT NULL COMMENT '合同负责人，引用users表的id',
  `org_id` VARCHAR(32) NOT NULL COMMENT '所属组织，引用organization表的id',
  `ai_compliance_result` TEXT COMMENT 'AI合规检查结果',
  `ai_key_dates` TEXT COMMENT 'AI提取的关键时点JSON数据',
  `payment_terms` TEXT COMMENT '付款节点规则，如\'30%预付款+50%进度款+20%尾款\'',
  `credit_period` INT COMMENT '账期天数',
  `penalty_clause` TEXT COMMENT '违约金相关条款',
  `opportunity_id` VARCHAR(32) COMMENT '关联的商机ID',
  `customer_id` VARCHAR(32) COMMENT '关联的客户ID',
  `tax_rate` DECIMAL(5,4) DEFAULT '0.1300' COMMENT '税率，默认13%',
  `created_at` TIMESTAMP NOT NULL COMMENT '创建时间',
  `updated_at` TIMESTAMP NOT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='合同表';

CREATE UNIQUE INDEX `idx_contract_number` ON `contract` (`contract_number`);
CREATE INDEX `idx_contract_org` ON `contract` (`org_id`);
CREATE INDEX `idx_contract_status` ON `contract` (`status`);

-- Table from contract_ai_config.json
CREATE TABLE IF NOT EXISTS `contract_ai_config` (
  `id` VARCHAR(32) NOT NULL COMMENT 'AI配置ID',
  `ai_service_url` VARCHAR(500) NOT NULL COMMENT 'AI服务URL地址',
  `api_key` VARCHAR(255) NOT NULL COMMENT 'API密钥',
  `org_id` VARCHAR(32) NOT NULL COMMENT '所属组织',
  `created_at` TIMESTAMP NOT NULL COMMENT '创建时间',
  `updated_at` TIMESTAMP NOT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='AI配置表';

CREATE UNIQUE INDEX `idx_ai_config_org` ON `contract_ai_config` (`org_id`);

-- Table from contract_attachment.json
CREATE TABLE IF NOT EXISTS `contract_attachment` (
  `id` VARCHAR(32) NOT NULL COMMENT '附件ID，主键',
  `contract_id` VARCHAR(32) NOT NULL COMMENT '关联的合同ID，引用contract表的id',
  `file_name` VARCHAR(255) NOT NULL COMMENT '文件名',
  `file_path` VARCHAR(500) NOT NULL COMMENT '文件存储路径',
  `file_size` INT NOT NULL COMMENT '文件大小（字节）',
  `file_type` VARCHAR(50) NOT NULL COMMENT '文件类型（MIME类型）',
  `version` INT NOT NULL DEFAULT '1' COMMENT '文件版本号',
  `description` VARCHAR(200) COMMENT '附件描述',
  `uploaded_by` VARCHAR(32) NOT NULL COMMENT '上传人，引用users表的id',
  `org_id` VARCHAR(32) NOT NULL COMMENT '所属组织',
  `created_at` TIMESTAMP NOT NULL COMMENT '上传时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='合同附件表';

CREATE INDEX `idx_attachment_contract` ON `contract_attachment` (`contract_id`);
CREATE INDEX `idx_attachment_org` ON `contract_attachment` (`org_id`);
CREATE INDEX `idx_attachment_version` ON `contract_attachment` (`file_name`, `version`);

-- Table from contract_milestones.json
CREATE TABLE IF NOT EXISTS `contract_milestones` (
  `id` VARCHAR(32) NOT NULL COMMENT '主键 - UUID格式',
  `contract_id` VARCHAR(32) NOT NULL COMMENT '关联的合同ID',
  `milestone_name` VARCHAR(100) NOT NULL COMMENT '里程碑名称，如\'预付款到账\'、\'产品交付\'、\'验收完成\'',
  `milestone_type` VARCHAR(20) NOT NULL COMMENT '里程碑类型：payment=付款, delivery=交付, acceptance=验收',
  `planned_date` DATE NOT NULL COMMENT '计划完成日期',
  `actual_date` DATE COMMENT '实际完成日期',
  `amount` DECIMAL(15,2) COMMENT '该里程碑关联的金额',
  `status` VARCHAR(20) NOT NULL DEFAULT 'pending' COMMENT '状态：pending=待处理, completed=已完成, overdue=已逾期',
  `description` TEXT COMMENT '里程碑详细描述',
  `created_at` TIMESTAMP NOT NULL COMMENT '创建时间',
  `updated_at` TIMESTAMP NOT NULL COMMENT '最后更新时间',
  `reminder_sent` VARCHAR(1) NOT NULL DEFAULT '0' COMMENT '逾期提醒是否已发送：1=是, 0=否',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='合同里程碑管理表';

CREATE INDEX `idx_milestones_contract` ON `contract_milestones` (`contract_id`);
CREATE INDEX `idx_milestones_status` ON `contract_milestones` (`status`);
CREATE INDEX `idx_milestones_planned` ON `contract_milestones` (`planned_date`);

-- Table from contract_versions.json
CREATE TABLE IF NOT EXISTS `contract_versions` (
  `id` VARCHAR(32) NOT NULL COMMENT '主键 - UUID格式',
  `contract_id` VARCHAR(32) NOT NULL COMMENT '关联的合同ID',
  `version_number` VARCHAR(20) NOT NULL COMMENT '版本号，如v1.0, v1.1等',
  `content` TEXT NOT NULL COMMENT '合同完整内容或差异内容',
  `diff_content` TEXT COMMENT '与上一版本的差异内容（HTML格式）',
  `modified_by` VARCHAR(32) NOT NULL COMMENT '修改人用户ID',
  `modified_reason` TEXT COMMENT '版本修改原因',
  `created_at` TIMESTAMP NOT NULL COMMENT '版本创建时间',
  `is_current` VARCHAR(1) NOT NULL DEFAULT '0' COMMENT '是否为当前生效版本：1=是, 0=否',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='合同版本管理表';

CREATE INDEX `idx_contract_versions_contract` ON `contract_versions` (`contract_id`);
CREATE UNIQUE INDEX `idx_contract_versions_version` ON `contract_versions` (`contract_id`, `version_number`);
CREATE INDEX `idx_contract_versions_current` ON `contract_versions` (`contract_id`, `is_current`);

-- Table from order_payments.json
CREATE TABLE IF NOT EXISTS `order_payments` (
  `id` VARCHAR(32) NOT NULL COMMENT '主键 - UUID格式',
  `order_id` VARCHAR(32) NOT NULL COMMENT '关联的订单ID',
  `payment_amount` DECIMAL(15,2) NOT NULL COMMENT '本次付款金额',
  `payment_date` DATE NOT NULL COMMENT '付款日期',
  `payment_method` VARCHAR(50) COMMENT '付款方式',
  `payment_reference` VARCHAR(100) COMMENT '付款凭证号或参考号',
  `status` VARCHAR(20) NOT NULL DEFAULT 'pending' COMMENT '状态：pending=待确认, confirmed=已确认, rejected=已拒绝',
  `notes` TEXT COMMENT '付款备注',
  `created_at` TIMESTAMP NOT NULL COMMENT '创建时间',
  `confirmed_at` TIMESTAMP COMMENT '付款确认时间',
  `confirmed_by` VARCHAR(32) COMMENT '付款确认人ID',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='订单付款记录表';

CREATE INDEX `idx_payments_order` ON `order_payments` (`order_id`);
CREATE INDEX `idx_payments_status` ON `order_payments` (`status`);
CREATE INDEX `idx_payments_date` ON `order_payments` (`payment_date`);

-- Table from orders.json
CREATE TABLE IF NOT EXISTS `orders` (
  `id` VARCHAR(32) NOT NULL COMMENT '主键 - UUID格式',
  `order_number` VARCHAR(50) NOT NULL COMMENT '订单编号，唯一标识',
  `contract_id` VARCHAR(32) NOT NULL COMMENT '关联的合同ID',
  `customer_id` VARCHAR(32) NOT NULL COMMENT '客户ID',
  `order_type` VARCHAR(20) NOT NULL COMMENT '订单类型：advance=预付款, progress=进度款, final=尾款, other=其他',
  `delivery_batch` VARCHAR(100) COMMENT '交付批次，如\'Q3季度服务交付\'',
  `acceptance_deadline` DATE COMMENT '验收截止日期',
  `amount` DECIMAL(15,2) NOT NULL COMMENT '该订单的金额',
  `paid_amount` DECIMAL(15,2) NOT NULL DEFAULT '0.00' COMMENT '已支付金额',
  `tax_rate` DECIMAL(5,4) NOT NULL DEFAULT '0.1300' COMMENT '税率',
  `credit_period` INT COMMENT '账期天数要求',
  `status` VARCHAR(20) NOT NULL DEFAULT 'active' COMMENT '状态：active=活跃, completed=完成, cancelled=取消',
  `description` TEXT COMMENT '订单详细描述',
  `created_at` TIMESTAMP NOT NULL COMMENT '创建时间',
  `updated_at` TIMESTAMP NOT NULL COMMENT '最后更新时间',
  `owner_id` VARCHAR(32) NOT NULL COMMENT '订单负责人ID',
  `org_id` VARCHAR(32) NOT NULL COMMENT '所属组织ID',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='订单表';

CREATE UNIQUE INDEX `idx_orders_number` ON `orders` (`order_number`);
CREATE INDEX `idx_orders_contract` ON `orders` (`contract_id`);
CREATE INDEX `idx_orders_customer` ON `orders` (`customer_id`);
CREATE INDEX `idx_orders_status` ON `orders` (`status`);
CREATE INDEX `idx_orders_owner` ON `orders` (`owner_id`);