from __future__ import annotations

import sqlite3

from backend.database.migrations.runner import Migration


def upgrade(connection: sqlite3.Connection) -> None:
    statements = (
        """
        CREATE TABLE job_runs (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            kind TEXT NOT NULL,
            run_key TEXT NOT NULL,
            requested_date TEXT NOT NULL DEFAULT '',
            trigger TEXT NOT NULL,
            status TEXT NOT NULL CHECK (status IN ('running','completed','failed')),
            attempt INTEGER NOT NULL CHECK (attempt >= 1),
            started_at TEXT NOT NULL,
            finished_at TEXT,
            duration_ms INTEGER,
            coverage REAL CHECK (coverage BETWEEN 0 AND 1),
            source_set_json TEXT NOT NULL DEFAULT '[]',
            output_version TEXT NOT NULL DEFAULT '',
            payload_json TEXT NOT NULL DEFAULT '{}',
            error_code TEXT NOT NULL DEFAULT '',
            error_message TEXT NOT NULL DEFAULT '',
            UNIQUE(kind, run_key, attempt)
        )
        """,
        """
        CREATE UNIQUE INDEX job_runs_active_kind_idx
        ON job_runs(kind) WHERE status = 'running'
        """,
        """
        CREATE INDEX job_runs_kind_started_idx
        ON job_runs(kind, started_at DESC, id DESC)
        """,
        """
        CREATE TABLE market_event_revisions (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            trade_date TEXT NOT NULL,
            identifier TEXT NOT NULL,
            event_type TEXT NOT NULL CHECK (event_type IN ('limit_up','broken','limit_down')),
            reason TEXT NOT NULL DEFAULT '',
            first_time TEXT NOT NULL DEFAULT '',
            last_time TEXT NOT NULL DEFAULT '',
            open_times INTEGER CHECK (open_times IS NULL OR open_times >= 0),
            source TEXT NOT NULL CHECK (source IN ('tushare','ifind','admin')),
            priority INTEGER NOT NULL CHECK (priority >= 0),
            created_by INTEGER REFERENCES users(id) ON DELETE SET NULL,
            created_at TEXT NOT NULL
        )
        """,
        """
        CREATE INDEX market_event_revisions_lookup_idx
        ON market_event_revisions(trade_date, identifier, event_type, priority DESC, id DESC)
        """,
    )
    for statement in statements:
        connection.execute(statement)


def downgrade(connection: sqlite3.Connection) -> None:
    connection.execute("DROP TABLE market_event_revisions")
    connection.execute("DROP TABLE job_runs")


MIGRATION = Migration(
    version=11,
    name="create_operations_audit",
    signature="operations:v1:jobs-event-revisions",
    upgrade=upgrade,
    downgrade=downgrade,
)