-- =============================================================================
-- 上号系统 - 数据库结构 (MySQL 8+)
-- =============================================================================

-- 可选：创建并使用独立库
CREATE DATABASE IF NOT EXISTS login_task_db
  DEFAULT CHARACTER SET utf8mb4
  DEFAULT COLLATE utf8mb4_0900_ai_ci;
USE login_task_db;

SET NAMES utf8mb4;
SET sql_mode = 'STRICT_ALL_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO';

-- -----------------------------------------------------------------------------
-- 1) 统一账户表（管理员/代理商共用）
--    用 user_type 区分：ADMIN | AGENT
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS user_account (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    user_type       ENUM('ADMIN','AGENT') NOT NULL,
    username        VARCHAR(64) NOT NULL UNIQUE, -- 登录名（两类共用）
    display_name    VARCHAR(100) NULL,          -- 展示名（AGENT 可用）
    password_hash   VARCHAR(120) NOT NULL,      -- 建议存储 BCrypt（或临时 PLAIN:<pwd> 便于初始化）
    role            ENUM('SUPER','ADMIN') NULL, -- 仅 ADMIN 使用
    status          ENUM('ENABLED','DISABLED') NOT NULL DEFAULT 'ENABLED',
    points_balance  BIGINT UNSIGNED NOT NULL DEFAULT 0,   -- 仅 AGENT 使用
    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),
    CONSTRAINT chk_points_nonneg CHECK (points_balance >= 0)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- 默认管理员账号（密码：admin7uqweh12）。
-- 生产环境请尽快替换为 BCrypt 哈希；此处为 PLAIN 方便首次初始化。
INSERT INTO user_account(user_type, username, display_name, password_hash, role, status, points_balance)
VALUES ('ADMIN', 'admin', 'Super Admin', 'PLAIN:admin7uqweh12', 'SUPER', 'ENABLED', 0)
ON DUPLICATE KEY UPDATE username = username;

-- -----------------------------------------------------------------------------
-- 2) 代理商点数流水
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS agent_points_tx (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    account_id      BIGINT UNSIGNED NOT NULL, -- 指向 user_account(AGENT)
    type            ENUM('ADD','DEDUCT') NOT NULL,
    before_points   BIGINT UNSIGNED NOT NULL,
    delta_points    BIGINT SIGNED   NOT NULL, -- 可为正/负；与 type 对应
    after_points    BIGINT UNSIGNED NOT NULL,
    reason          ENUM('create_links','manual','refund_no_rollback','other') NOT NULL DEFAULT 'other',
    ref_id          BIGINT UNSIGNED NULL,     -- 可关联到 link_batch.id
    operator_id     BIGINT UNSIGNED NULL,     -- 操作者（管理员，指向 user_account）
    created_at      DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    INDEX idx_apx_account_time (account_id, created_at),
    CONSTRAINT fk_apx_account   FOREIGN KEY (account_id)  REFERENCES user_account(id),
    CONSTRAINT fk_apx_operator  FOREIGN KEY (operator_id) REFERENCES user_account(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- -----------------------------------------------------------------------------
-- 3) 链接批次（一次生成 N 个链接，按统一设置扣费）
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS link_batch (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    agent_id        BIGINT UNSIGNED NOT NULL, -- 指向 user_account(AGENT)
    quantity        INT UNSIGNED NOT NULL,    -- 每次奖励数量（如 50）
    times           INT UNSIGNED NOT NULL,    -- 重复执行次数（如 20）
    batch_size      INT UNSIGNED NOT NULL,    -- 本批生成链接数量（如 10）
    deduct_points   BIGINT UNSIGNED NOT NULL, -- 扣点=quantity*times*batch_size
    operator_id     BIGINT UNSIGNED NULL,     -- 操作者（管理员）
    created_at      DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    INDEX idx_lb_agent_time (agent_id, created_at),
    CONSTRAINT chk_lb_quantity_pos CHECK (quantity > 0),
    CONSTRAINT chk_lb_times_pos    CHECK (times > 0),
    CONSTRAINT chk_lb_batch_pos    CHECK (batch_size > 0),
    CONSTRAINT fk_lb_agent         FOREIGN KEY (agent_id)    REFERENCES user_account(id),
    CONSTRAINT fk_lb_operator      FOREIGN KEY (operator_id) REFERENCES user_account(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- -----------------------------------------------------------------------------
-- 4) 单链接任务（用户访问的“加密链接”对应的实体）
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS link_task (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    batch_id        BIGINT UNSIGNED NOT NULL,
    agent_id        BIGINT UNSIGNED NOT NULL,  -- 指向 user_account(AGENT)
    code_no         VARCHAR(32)  NOT NULL,     -- 后端生成的全局唯一编号
    token_hash      CHAR(64)     NOT NULL,     -- 加密token的SHA-256（用于失效/撤销）
    expire_at       DATETIME(3)  NOT NULL,     -- 链接有效期（默认 24h）
    status          ENUM('NEW','USING','LOGGED_IN','REFUNDED','EXPIRED') NOT NULL DEFAULT 'NEW',
    region          ENUM('Q','V') NULL,        -- 选区；未选择前为 NULL
    machine_id      VARCHAR(64)  NULL,         -- 绑定的脚本端机器编号
    login_at        DATETIME(3)  NULL,
    refund_at       DATETIME(3)  NULL,
    revoked_at      DATETIME(3)  NULL,         -- 主动撤销（如需要立即失效）
    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),
    UNIQUE KEY uk_code_no     (code_no),
    UNIQUE KEY uk_token_hash  (token_hash),
    INDEX idx_agent_status    (agent_id, status),
    INDEX idx_expire_at       (expire_at),
    INDEX idx_created_at      (created_at),
    CONSTRAINT fk_lt_batch    FOREIGN KEY (batch_id) REFERENCES link_batch(id),
    CONSTRAINT fk_lt_agent    FOREIGN KEY (agent_id) REFERENCES user_account(id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- -----------------------------------------------------------------------------
-- 5) 操作日志（审计/可观测性）
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS operation_log (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    actor_type      ENUM('admin','agent','system','user') NOT NULL,
    actor_id        BIGINT UNSIGNED NULL,      -- 不强制外键，避免多态复杂度
    code_no         VARCHAR(32) NULL,
    op              VARCHAR(64) NOT NULL,      -- 如：create_links / refund / select_region / create_qr / poll_login / release_machine
    detail          JSON NULL,                 -- 具体参数/返回（注意脱敏）
    client_ip       VARCHAR(45) NULL,
    user_agent      VARCHAR(255) NULL,
    created_at      DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    INDEX idx_log_code_time (code_no, created_at),
    INDEX idx_log_time      (created_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- -----------------------------------------------------------------------------
-- 6) 公告
-- -----------------------------------------------------------------------------
CREATE TABLE IF NOT EXISTS announcement (
    id              BIGINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
    title           VARCHAR(100) NOT NULL,
    content         TEXT NOT NULL,          -- 富文本
    enabled         TINYINT(1) NOT NULL DEFAULT 1,
    jump_url        VARCHAR(255) 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)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;