-- 数字人 vs 真人"对抗学习"
-- 每周为每个 bot 选 1 个真实高赞真人帖，让 bot 吸收其"为什么高互动"的洞察

CREATE TABLE `bot_adversarial_learnings` (
  `id`                INT          NOT NULL AUTO_INCREMENT,
  `bot_id`            INT          NOT NULL,
  `week_key`          VARCHAR(20)  NOT NULL,
  `source_ref_type`   VARCHAR(20)  NOT NULL,
  `source_ref_id`     INT          NOT NULL,
  `source_user_id`    INT          NOT NULL,
  `source_user_name`  VARCHAR(50)  NULL,
  `forum_slug`        VARCHAR(30)  NULL,
  `source_title`      VARCHAR(200) NULL,
  `source_content`    TEXT         NOT NULL,
  `source_metrics`    JSON         NOT NULL,
  `relevance_score`   DOUBLE       NOT NULL DEFAULT 0,
  `learned_insight`   TEXT         NOT NULL,
  `learn_categories`  JSON         NULL,
  `status`            VARCHAR(20)  NOT NULL DEFAULT 'active',
  `used_count`        INT          NOT NULL DEFAULT 0,
  `learned_at`        DATETIME(3)  NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
  `expires_at`        DATETIME(3)  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 INDEX `bot_adversarial_learnings_bot_id_week_key_key`(`bot_id`, `week_key`),
  INDEX `bot_adversarial_learnings_bot_id_status_idx`(`bot_id`, `status`),
  INDEX `bot_adversarial_learnings_week_key_idx`(`week_key`),
  INDEX `bot_adversarial_learnings_source_ref_type_source_ref_id_idx`(`source_ref_type`, `source_ref_id`)
);