-- 文件说明：etl_admin 调度元数据 DDL（独立文件，便于初始化任务单独执行）。
-- 包含任务注册表、游标表、运行记录表；字段注释使用中文。

CREATE SCHEMA IF NOT EXISTS etl_admin;

CREATE TABLE IF NOT EXISTS etl_admin.etl_task (
    task_id                 BIGSERIAL PRIMARY KEY,
    task_code               TEXT            NOT NULL,
    store_id                BIGINT          NOT NULL,
    enabled                 BOOLEAN         DEFAULT TRUE,
    cursor_field            TEXT,
    window_minutes_default  INT             DEFAULT 30,
    overlap_seconds         INT             DEFAULT 120,
    page_size               INT             DEFAULT 200,
    retry_max               INT             DEFAULT 3,
    params                  JSONB           DEFAULT '{}'::jsonb,
    created_at              TIMESTAMPTZ     DEFAULT now(),
    updated_at              TIMESTAMPTZ     DEFAULT now(),
    UNIQUE (task_code, store_id)
);
COMMENT ON TABLE etl_admin.etl_task IS '任务注册表：调度依据的任务清单（与 task_registry 中的任务码对应）。';
COMMENT ON COLUMN etl_admin.etl_task.task_code IS '任务编码，需与代码中的任务码一致。';
COMMENT ON COLUMN etl_admin.etl_task.store_id IS '门店/租户粒度，区分多门店执行。';
COMMENT ON COLUMN etl_admin.etl_task.enabled IS '是否启用此任务。';
COMMENT ON COLUMN etl_admin.etl_task.cursor_field IS '增量游标字段名（可选）。';
COMMENT ON COLUMN etl_admin.etl_task.window_minutes_default IS '默认时间窗口（分钟）。';
COMMENT ON COLUMN etl_admin.etl_task.overlap_seconds IS '窗口重叠秒数，用于防止遗漏。';
COMMENT ON COLUMN etl_admin.etl_task.page_size IS '默认分页大小。';
COMMENT ON COLUMN etl_admin.etl_task.retry_max IS 'API重试次数上限。';
COMMENT ON COLUMN etl_admin.etl_task.params IS '任务级自定义参数 JSON。';
COMMENT ON COLUMN etl_admin.etl_task.created_at IS '创建时间。';
COMMENT ON COLUMN etl_admin.etl_task.updated_at IS '更新时间。';

CREATE TABLE IF NOT EXISTS etl_admin.etl_cursor (
    cursor_id   BIGSERIAL PRIMARY KEY,
    task_id     BIGINT      NOT NULL REFERENCES etl_admin.etl_task(task_id) ON DELETE CASCADE,
    store_id    BIGINT      NOT NULL,
    last_start  TIMESTAMPTZ,
    last_end    TIMESTAMPTZ,
    last_id     BIGINT,
    last_run_id BIGINT,
    extra       JSONB       DEFAULT '{}'::jsonb,
    created_at  TIMESTAMPTZ DEFAULT now(),
    updated_at  TIMESTAMPTZ DEFAULT now(),
    UNIQUE (task_id, store_id)
);
COMMENT ON TABLE etl_admin.etl_cursor IS '任务游标表：记录每个任务/门店的增量窗口及最后 run。';
COMMENT ON COLUMN etl_admin.etl_cursor.task_id IS '关联 etl_task.task_id。';
COMMENT ON COLUMN etl_admin.etl_cursor.store_id IS '门店/租户粒度。';
COMMENT ON COLUMN etl_admin.etl_cursor.last_start IS '上次窗口开始时间（含重叠偏移）。';
COMMENT ON COLUMN etl_admin.etl_cursor.last_end IS '上次窗口结束时间。';
COMMENT ON COLUMN etl_admin.etl_cursor.last_id IS '上次处理的最大主键/游标值（可选）。';
COMMENT ON COLUMN etl_admin.etl_cursor.last_run_id IS '上次运行ID，对应 etl_run.run_id。';
COMMENT ON COLUMN etl_admin.etl_cursor.extra IS '附加游标信息 JSON。';
COMMENT ON COLUMN etl_admin.etl_cursor.created_at IS '创建时间。';
COMMENT ON COLUMN etl_admin.etl_cursor.updated_at IS '更新时间。';

CREATE TABLE IF NOT EXISTS etl_admin.etl_run (
    run_id          BIGSERIAL PRIMARY KEY,
    run_uuid        TEXT            NOT NULL,
    task_id         BIGINT          NOT NULL REFERENCES etl_admin.etl_task(task_id) ON DELETE CASCADE,
    store_id        BIGINT          NOT NULL,
    status          TEXT            NOT NULL,
    started_at      TIMESTAMPTZ     DEFAULT now(),
    ended_at        TIMESTAMPTZ,
    window_start    TIMESTAMPTZ,
    window_end      TIMESTAMPTZ,
    window_minutes  INT,
    overlap_seconds INT,
    fetched_count   INT             DEFAULT 0,
    loaded_count    INT             DEFAULT 0,
    updated_count   INT             DEFAULT 0,
    skipped_count   INT             DEFAULT 0,
    error_count     INT             DEFAULT 0,
    unknown_fields  INT             DEFAULT 0,
    export_dir      TEXT,
    log_path        TEXT,
    request_params  JSONB           DEFAULT '{}'::jsonb,
    manifest        JSONB           DEFAULT '{}'::jsonb,
    error_message   TEXT,
    extra           JSONB           DEFAULT '{}'::jsonb
);
COMMENT ON TABLE etl_admin.etl_run IS '运行记录表：记录每次任务执行的窗口、状态、计数与日志路径。';
COMMENT ON COLUMN etl_admin.etl_run.run_uuid IS '本次调度的唯一标识。';
COMMENT ON COLUMN etl_admin.etl_run.task_id IS '关联 etl_task.task_id。';
COMMENT ON COLUMN etl_admin.etl_run.store_id IS '门店/租户粒度。';
COMMENT ON COLUMN etl_admin.etl_run.status IS '运行状态（SUCC/FAIL/PARTIAL 等）。';
COMMENT ON COLUMN etl_admin.etl_run.started_at IS '开始时间。';
COMMENT ON COLUMN etl_admin.etl_run.ended_at IS '结束时间。';
COMMENT ON COLUMN etl_admin.etl_run.window_start IS '本次窗口开始时间。';
COMMENT ON COLUMN etl_admin.etl_run.window_end IS '本次窗口结束时间。';
COMMENT ON COLUMN etl_admin.etl_run.window_minutes IS '窗口跨度（分钟）。';
COMMENT ON COLUMN etl_admin.etl_run.overlap_seconds IS '窗口重叠秒数。';
COMMENT ON COLUMN etl_admin.etl_run.fetched_count IS '抓取/读取的记录数。';
COMMENT ON COLUMN etl_admin.etl_run.loaded_count IS '插入的记录数。';
COMMENT ON COLUMN etl_admin.etl_run.updated_count IS '更新的记录数。';
COMMENT ON COLUMN etl_admin.etl_run.skipped_count IS '跳过的记录数。';
COMMENT ON COLUMN etl_admin.etl_run.error_count IS '错误记录数。';
COMMENT ON COLUMN etl_admin.etl_run.unknown_fields IS '未知字段计数（清洗阶段）。';
COMMENT ON COLUMN etl_admin.etl_run.export_dir IS '抓取/导出目录。';
COMMENT ON COLUMN etl_admin.etl_run.log_path IS '日志路径。';
COMMENT ON COLUMN etl_admin.etl_run.request_params IS '请求参数 JSON。';
COMMENT ON COLUMN etl_admin.etl_run.manifest IS '运行产出清单/统计 JSON。';
COMMENT ON COLUMN etl_admin.etl_run.error_message IS '错误信息（若失败）。';
COMMENT ON COLUMN etl_admin.etl_run.extra IS '附加字段，保留扩展。';