"""回归：``_ensure_orm_columns_sync`` 必须把**既有**表升级到最新 ORM schema。

模拟生产「已上线 MySQL → 切到带 Phase 3 改动的代码」的真实场景：``roundtable_jobs``
表已存在但只有旧列（无 attempt/version/active_dedupe_key/…，无唯一约束）。
``create_all`` 不会动既有表，alembic 自动升级在部署里是注释掉的，唯一兜底就是
``_ensure_orm_columns_sync``。若它漏补一列或漏建唯一索引：

* ``attempt``/``version`` 缺失 → 每次 ``claim_job``/条件 UPDATE 引用该列 → SQL 报错 → 作业永远不被领取（并发报错）；
* ``active_dedupe_key`` 唯一性缺失 → 同 scope 两条活跃作业共存 → 去重失效（用户报的并发双跑）。

本测试用 SQLite（CREATE UNIQUE INDEX 全平台支持）锁死这条升级路径。
"""

from __future__ import annotations

import pytest
from sqlalchemy import create_engine, inspect, text


def _legacy_roundtable_jobs_ddl() -> str:
    """线上旧版 roundtable_jobs（Phase 3 之前）的最小列集。"""
    return (
        "CREATE TABLE roundtable_jobs ("
        "id VARCHAR(64) PRIMARY KEY,"
        "draft_id VARCHAR(64),"
        "user_id VARCHAR(64),"
        "task_id VARCHAR(128),"
        "status VARCHAR(32) NOT NULL DEFAULT 'queued',"
        "created_at DATETIME NOT NULL,"
        "updated_at DATETIME NOT NULL"
        ")"
    )


def test_legacy_roundtable_jobs_upgraded_with_phase3_columns_and_unique_index():
    """既有表缺 Phase 3 列 → sync 补齐列 + 建唯一索引 + 旧行默认值 0。"""
    from deerflow.persistence.engine import _ensure_orm_columns_sync

    engine = create_engine("sqlite:///:memory:")
    with engine.begin() as conn:
        conn.execute(text(_legacy_roundtable_jobs_ddl()))
        # 一条旧行（Phase 3 列不存在，验证补列后默认值生效）。
        conn.execute(
            text(
                "INSERT INTO roundtable_jobs (id, draft_id, status, created_at, updated_at) "
                "VALUES ('legacy-1', 'd1', 'done', '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
            )
        )
        # 触发升级。
        _ensure_orm_columns_sync(conn)

    inspector = inspect(engine)
    cols = {c["name"] for c in inspector.get_columns("roundtable_jobs")}

    # 1) Phase 3 必备列全部补齐（attempt/version 曾缺 server_default 会被漏掉）。
    for required in (
        "attempt",
        "version",
        "active_dedupe_key",
        "request_id",
        "request_hash",
        "input_snapshot",
        "lease_owner",
        "lease_until",
        "draft_persist_pending",
    ):
        assert required in cols, f"missing Phase 3 column after sync: {required}"

    # 2) 唯一索引建好（去重正确性的根）。
    idx_names = {ix["name"] for ix in inspector.get_indexes("roundtable_jobs")}
    assert "uq_roundtable_jobs_active_dedupe_key" in idx_names

    with engine.begin() as conn:
        # 3) 旧行的 NOT NULL 计数/CAS 列拿到 server_default 0（不是 NULL，否则查询报错）。
        row = conn.execute(
            text("SELECT attempt, version, draft_persist_pending FROM roundtable_jobs WHERE id='legacy-1'")
        ).fetchone()
        assert row is not None
        assert int(row[0]) == 0 and int(row[1]) == 0 and int(row[2]) in (0, False)

        # 4) 唯一索引真的强制唯一：两条同 active_dedupe_key 的活跃行第二条必冲突。
        conn.execute(
            text(
                "INSERT INTO roundtable_jobs (id, status, active_dedupe_key, created_at, updated_at) "
                "VALUES ('a', 'running', 'K', '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
            )
        )
        with pytest.raises(Exception):
            conn.execute(
                text(
                    "INSERT INTO roundtable_jobs (id, status, active_dedupe_key, created_at, updated_at) "
                    "VALUES ('b', 'running', 'K', '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
                )
            )
        # 5) 多个 NULL 不冲突（终态历史作业共存）。
        conn.execute(
            text(
                "INSERT INTO roundtable_jobs (id, status, active_dedupe_key, created_at, updated_at) "
                "VALUES ('c', 'done', NULL, '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
            )
        )
        conn.execute(
            text(
                "INSERT INTO roundtable_jobs (id, status, active_dedupe_key, created_at, updated_at) "
                "VALUES ('d', 'done', NULL, '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
            )
        )


def test_sync_idempotent_repeated_runs_do_not_duplicate_index():
    """重复启动（多次 sync）不应重复建索引（同名已存在即跳过）。"""
    from deerflow.persistence.engine import _ensure_orm_columns_sync

    engine = create_engine("sqlite:///:memory:")
    with engine.begin() as conn:
        conn.execute(text(_legacy_roundtable_jobs_ddl()))
        _ensure_orm_columns_sync(conn)
        # 第二次：不应抛「索引已存在」。
        _ensure_orm_columns_sync(conn)

    inspector = inspect(engine)
    idx_names = [ix["name"] for ix in inspector.get_indexes("roundtable_jobs")]
    assert idx_names.count("uq_roundtable_jobs_active_dedupe_key") == 1


def _legacy_task_buttons_ddl() -> str:
    """线上旧版 task_buttons（login_params_json / append_auth 之前）的最小列集。"""
    return (
        "CREATE TABLE task_buttons ("
        "id VARCHAR(128) PRIMARY KEY,"
        "business VARCHAR(32) NOT NULL,"
        "label VARCHAR(255),"
        "link_type VARCHAR(16),"
        "target VARCHAR(1024),"
        "append_task_id BOOLEAN,"
        "enabled BOOLEAN,"
        "sort_order INTEGER,"
        "updated_by VARCHAR(64),"
        "updated_at DATETIME"
        ")"
    )


def test_legacy_task_buttons_gains_login_params_json():
    """既有 task_buttons 缺 login_params_json → sync 必须补上，不能因 NOT NULL 跳过。"""
    from deerflow.persistence.engine import _ensure_orm_columns_sync

    engine = create_engine("sqlite:///:memory:")
    with engine.begin() as conn:
        conn.execute(text(_legacy_task_buttons_ddl()))
        conn.execute(
            text(
                "INSERT INTO task_buttons (id, business, label, link_type, target, append_task_id, enabled, sort_order) "
                "VALUES ('rwfx-next', 'rwfx', '下一步', 'url', 'https://example.test', 1, 1, 0)"
            )
        )
        _ensure_orm_columns_sync(conn)

    cols = {c["name"] for c in inspect(engine).get_columns("task_buttons")}
    assert "login_params_json" in cols, "login_params_json was skipped by auto-add"
    assert "append_auth" in cols
    assert "auth_token_param" in cols
    assert "auth_name_param" in cols

    with engine.begin() as conn:
        row = conn.execute(text("SELECT login_params_json, append_auth FROM task_buttons WHERE id='rwfx-next'")).fetchone()
        assert row is not None
        # nullable JSON 补列后旧行为 NULL；append_auth 有 server_default 0。
        assert row[0] in (None, "[]", "null", b"null")
        assert int(row[1]) in (0, False)


def _legacy_workflow_data_sources_ddl() -> str:
    """工作流数据源表在 HTTP 接口元数据列出现前的最小完整结构。"""
    return (
        "CREATE TABLE workflow_data_sources ("
        "id VARCHAR(64) PRIMARY KEY,"
        "name VARCHAR(191) NOT NULL,"
        "description VARCHAR(512) NOT NULL DEFAULT '',"
        "kind VARCHAR(32) NOT NULL DEFAULT 'sql',"
        "driver VARCHAR(64) NOT NULL DEFAULT '',"
        "secret_ciphertext TEXT NOT NULL DEFAULT '',"
        "secret_encrypted BOOLEAN NOT NULL DEFAULT 1,"
        "masked_target VARCHAR(512) NOT NULL DEFAULT '',"
        "max_rows INTEGER NOT NULL DEFAULT 1000,"
        "allowed_tables TEXT,"
        "enabled BOOLEAN NOT NULL DEFAULT 1,"
        "owner_id VARCHAR(64),"
        "created_by VARCHAR(64),"
        "created_at DATETIME NOT NULL,"
        "updated_at DATETIME NOT NULL"
        ")"
    )


def test_legacy_workflow_data_source_gains_http_metadata_columns():
    """既有数据源表在启动同步后可保存 HTTP 地址和方法白名单。"""
    from deerflow.persistence.engine import _ensure_orm_columns_sync

    engine = create_engine("sqlite:///:memory:")
    with engine.begin() as conn:
        conn.execute(text(_legacy_workflow_data_sources_ddl()))
        conn.execute(
            text(
                "INSERT INTO workflow_data_sources (id, name, created_at, updated_at) "
                "VALUES ('legacy-http', 'legacy', '2026-01-01 00:00:00', '2026-01-01 00:00:00')"
            )
        )
        _ensure_orm_columns_sync(conn)

    columns = {column["name"] for column in inspect(engine).get_columns("workflow_data_sources")}
    assert "base_url" in columns
    assert "allowed_methods" in columns
    with engine.begin() as conn:
        row = conn.execute(
            text("SELECT base_url, allowed_methods FROM workflow_data_sources WHERE id='legacy-http'")
        ).fetchone()
        assert row is not None
        assert row[0] == ""
        assert row[1] is None


def _legacy_report_collaboration_003_ddl() -> list[str]:
    """线上若已按 RC-BE-003 建表、尚未跑 015/016 补丁时的最小列集。"""
    return [
        (
            "CREATE TABLE report_collaboration_runs ("
            "id VARCHAR(64) PRIMARY KEY,"
            "session_id VARCHAR(64) NOT NULL,"
            "plan_id VARCHAR(64) NOT NULL,"
            "status VARCHAR(32) NOT NULL DEFAULT 'queued',"
            "cancel_requested BOOLEAN NOT NULL DEFAULT 0,"
            "next_event_seq INTEGER NOT NULL DEFAULT 0,"
            "current_phase VARCHAR(64),"
            "active_dedupe_key VARCHAR(64),"
            "idempotency_key VARCHAR(128),"
            "lease_owner VARCHAR(64),"
            "lease_until DATETIME,"
            "attempt INTEGER NOT NULL DEFAULT 0,"
            "version INTEGER NOT NULL DEFAULT 0,"
            "created_at DATETIME NOT NULL,"
            "updated_at DATETIME NOT NULL"
            ")"
        ),
        (
            "CREATE TABLE report_collaboration_report_versions ("
            "id VARCHAR(64) PRIMARY KEY,"
            "session_id VARCHAR(64) NOT NULL,"
            "version INTEGER NOT NULL,"
            "parent_version_id VARCHAR(64),"
            "change_type VARCHAR(32) NOT NULL DEFAULT 'initial',"
            "change_summary TEXT,"
            "markdown TEXT NOT NULL,"
            "source_index_json TEXT NOT NULL,"
            "is_head BOOLEAN NOT NULL DEFAULT 0,"
            "created_at DATETIME NOT NULL"
            ")"
        ),
    ]


def test_legacy_report_collaboration_gains_015_016_columns_and_tables():
    """既有 003 表缺模板/预算/幂等列 → 启动 sync 补列；create_all 建改写/审计新表。"""
    from deerflow.persistence.base import Base
    from deerflow.persistence.engine import _ensure_orm_columns_sync
    import deerflow.persistence.models  # noqa: F401

    engine = create_engine("sqlite:///:memory:")
    with engine.begin() as conn:
        for ddl in _legacy_report_collaboration_003_ddl():
            conn.execute(text(ddl))
        conn.execute(
            text(
                "INSERT INTO report_collaboration_runs "
                "(id, session_id, plan_id, status, created_at, updated_at) "
                "VALUES ('run-old', 's1', 'p1', 'queued', '2026-09-05 00:00:00', '2026-09-05 00:00:00')"
            )
        )
        conn.execute(
            text(
                "INSERT INTO report_collaboration_report_versions "
                "(id, session_id, version, markdown, source_index_json, created_at) "
                "VALUES ('ver-old', 's1', 1, '# 旧稿', '[]', '2026-09-05 00:00:00')"
            )
        )
        Base.metadata.create_all(conn)
        _ensure_orm_columns_sync(conn)

    inspector = inspect(engine)
    run_cols = {item["name"] for item in inspector.get_columns("report_collaboration_runs")}
    version_cols = {item["name"] for item in inspector.get_columns("report_collaboration_report_versions")}
    tables = set(inspector.get_table_names())
    for required in ("template_snapshot_json", "budget_snapshot_json", "usage_json", "deadline_at", "budget_exhausted_reason"):
        assert required in run_cols, f"missing run column after sync: {required}"
    for required in ("idempotency_key", "origin_run_id", "quality_result_json", "template_snapshot_json"):
        assert required in version_cols, f"missing version column after sync: {required}"
    assert "report_collaboration_rewrite_proposals" in tables
    assert "report_collaboration_audits" in tables

    idx_names = {item["name"] for item in inspector.get_indexes("report_collaboration_report_versions")}
    assert "uq_rc_report_versions_idempotency" in idx_names
    assert "uq_rc_report_versions_session_version" in idx_names

    with engine.begin() as conn:
        row = conn.execute(
            text("SELECT template_snapshot_json, usage_json, budget_exhausted_reason FROM report_collaboration_runs WHERE id='run-old'")
        ).fetchone()
        assert row is not None
        assert row[0] is None and row[2] is None
        conn.execute(
            text(
                "UPDATE report_collaboration_runs SET template_snapshot_json='{}', budget_snapshot_json='{}', usage_json='{}' WHERE id='run-old'"
            )
        )
        conn.execute(
            text(
                "INSERT INTO report_collaboration_rewrite_proposals "
                "(id, session_id, parent_version_id, instruction, markdown, source_index_json, idempotency_key, created_at, updated_at) "
                "VALUES ('rw-1', 's1', 'ver-old', 'more-cautious', '# rewrite', '[]', 'ik-rw', '2026-09-06 00:00:00', '2026-09-06 00:00:00')"
            )
        )
        conn.execute(
            text(
                "INSERT INTO report_collaboration_audits "
                "(id, session_id, category, action, created_at) "
                "VALUES ('aud-1', 's1', 'policy', 'source.added', '2026-09-06 00:00:00')"
            )
        )