"""
Runbook runner — create run, next_step (execute http_check/script or return manual), complete_step, abort.
PR3: adds script action_type via SafeExecutor (allowlisted, no shell=True).
"""
from __future__ import annotations

import json
import logging
import time
import uuid
from typing import Any, Dict, List, Optional

import httpx

from . import db as _db
from . import docs_store as _docs_store
from .audit import audit_log, AuditEvent
from .runbook_parser import RunbookStep, parse_runbook
from . import safe_executor as _safe_exec

logger = logging.getLogger(__name__)

_ALLOWED_HTTP_PATHS = {"/api/health", "/metrics", "/api/audit"}


def _now_ts() -> float:
    return time.time()


async def create_run(
    runbook_path: str,
    operator_id: str = "",
    node_id: Optional[str] = None,
    sofiia_url: Optional[str] = None,
    data_json: Optional[Dict[str, Any]] = None,
) -> Dict[str, Any]:
    """Parse runbook, insert run + steps, audit. Returns run_id, status, current_step, steps_total."""
    raw = await _docs_store.get_raw(runbook_path)
    if not raw:
        raise ValueError(f"Runbook not found: {runbook_path}")
    base_url = sofiia_url or "http://127.0.0.1:8002"
    steps = parse_runbook(runbook_path, raw, sofiia_url=base_url)
    if not steps:
        raise ValueError("Runbook produced no steps")

    run_id = str(uuid.uuid4())
    now = _now_ts()
    conn = await _db.get_db()
    await conn.execute(
        """INSERT INTO runbook_runs(run_id, runbook_path, status, current_step, created_at, started_at,
           finished_at, operator_id, node_id, sofiia_url, data_json, evidence_path)
           VALUES (?,?,?,?,?,?,?,?,?,?,?,?)""",
        (
            run_id,
            runbook_path,
            "running",
            0,
            now,
            now,
            None,
            operator_id or None,
            node_id,
            base_url,
            json.dumps(data_json or {}, separators=(",", ":")) if data_json else None,
            None,
        ),
    )
    for s in steps:
        await conn.execute(
            """INSERT INTO runbook_steps(run_id, step_index, title, section, action_type, action_json,
               status, result_json, started_at, finished_at) VALUES (?,?,?,?,?,?,?,?,?,?)""",
            (
                run_id,
                s.step_index,
                s.title,
                s.section,
                s.action_type,
                json.dumps(s.action_json, separators=(",", ":")),
                s.status,
                None,
                None,
                None,
            ),
        )
    await conn.commit()

    await audit_log(
        AuditEvent(
            event="runbook.run.created",
            operator_id=operator_id or "unknown",
            operator_id_missing=not operator_id,
            node_id=node_id,
            status="ok",
            data={"run_id": run_id, "runbook_path": runbook_path, "steps_total": len(steps)},
        )
    )
    return {
        "run_id": run_id,
        "status": "running",
        "current_step": 0,
        "steps_total": len(steps),
    }


async def get_run(run_id: str) -> Optional[Dict[str, Any]]:
    """Return run row + steps (light: no large action_json/result_json)."""
    conn = await _db.get_db()
    async with conn.execute(
        "SELECT run_id, runbook_path, status, current_step, created_at, started_at, finished_at,"
        " operator_id, node_id, sofiia_url, evidence_path FROM runbook_runs WHERE run_id = ?",
        (run_id,),
    ) as cur:
        row = await cur.fetchone()
    if not row:
        return None
    run = {
        "run_id": row[0],
        "runbook_path": row[1],
        "status": row[2],
        "current_step": row[3],
        "created_at": row[4],
        "started_at": row[5],
        "finished_at": row[6],
        "operator_id": row[7],
        "node_id": row[8],
        "sofiia_url": row[9],
        "evidence_path": row[10],
    }
    async with conn.execute(
        "SELECT step_index, title, section, action_type, status, started_at, finished_at "
        "FROM runbook_steps WHERE run_id = ? ORDER BY step_index",
        (run_id,),
    ) as cur:
        step_rows = await cur.fetchall()
    run["steps"] = [
        {
            "step_index": r[0],
            "title": r[1],
            "section": r[2],
            "action_type": r[3],
            "status": r[4],
            "started_at": r[5],
            "finished_at": r[6],
        }
        for r in (step_rows or [])
    ]
    return run


async def _execute_http_check(base_url: str, action: Dict[str, Any]) -> Dict[str, Any]:
    """Allowlisted GET only; returns {status, status_code, ok, error}."""
    path = (action.get("url_path") or "").strip()
    if not path.startswith("/"):
        path = "/" + path
    if path not in _ALLOWED_HTTP_PATHS:
        return {"ok": False, "error": "path not allowlisted", "status_code": None}
    url = (base_url or "http://127.0.0.1:8002").rstrip("/") + path
    expect_statuses = action.get("expect", {}).get("status") or [200]
    try:
        async with httpx.AsyncClient(timeout=15.0) as client:
            r = await client.get(url, headers=action.get("headers") or {})
        ok = r.status_code in expect_statuses
        return {
            "ok": ok,
            "status_code": r.status_code,
            "expected": expect_statuses,
            "status": "ok" if ok else "fail",
        }
    except Exception as e:
        logger.warning("http_check %s failed: %s", url, e)
        return {"ok": False, "error": str(e)[:200], "status_code": None, "status": "fail"}


async def next_step(run_id: str, operator_id: str = "") -> Optional[Dict[str, Any]]:
    """
    Get current step; if http_check execute and advance; if manual return instructions.
    Returns either {type: "http_check", step_index, result, ...} or {type: "manual", step_index, title, instructions_md}.
    """
    conn = await _db.get_db()
    async with conn.execute(
        "SELECT runbook_path, status, current_step, sofiia_url FROM runbook_runs WHERE run_id = ?",
        (run_id,),
    ) as cur:
        row = await cur.fetchone()
    if not row or row[1] not in ("running", "paused"):
        return None
    runbook_path, status, current_step, sofiia_url = row[0], row[1], row[2], row[3]

    async with conn.execute(
        "SELECT step_index, title, section, action_type, action_json, status FROM runbook_steps "
        "WHERE run_id = ? AND step_index = ?",
        (run_id, current_step),
    ) as cur:
        step_row = await cur.fetchone()
    if not step_row:
        return None
    step_index, title, section, action_type, action_json_str, step_status = step_row
    action_json = json.loads(action_json_str) if action_json_str else {}

    started_at = _now_ts()
    await conn.execute(
        "UPDATE runbook_steps SET status = ?, started_at = ? WHERE run_id = ? AND step_index = ?",
        ("running", started_at, run_id, step_index),
    )
    await conn.commit()
    await audit_log(
        AuditEvent(
            event="runbook.step.started",
            operator_id=operator_id or "unknown",
            node_id=None,
            status="ok",
            data={"run_id": run_id, "step_index": step_index, "action_type": action_type, "title": title},
        )
    )

    if action_type in ("http_check", "script"):
        if action_type == "http_check":
            result = await _execute_http_check(sofiia_url or "http://127.0.0.1:8002", action_json)
            auto_ok = result.get("ok", False)
        else:
            # script via SafeExecutor
            script = action_json.get("script", "")
            env = action_json.get("env") or {}
            timeout_s = int(action_json.get("timeout_s", 120))
            result = await _safe_exec.run_script(script, env=env, timeout_s=timeout_s)
            auto_ok = result.get("ok", False)

        finished_at = _now_ts()
        duration_ms = int((finished_at - started_at) * 1000)
        # Non-root warning elevates to "warn" status (not "fail") if script exited 0
        if result.get("warning") == "running_as_root" and auto_ok:
            step_status = "warn"
        else:
            step_status = "ok" if auto_ok else "fail"

        await conn.execute(
            "UPDATE runbook_steps SET status = ?, result_json = ?, finished_at = ? WHERE run_id = ? AND step_index = ?",
            (step_status, json.dumps(result, separators=(",", ":")), finished_at, run_id, step_index),
        )
        next_current = current_step + 1
        async with conn.execute("SELECT COUNT(*) FROM runbook_steps WHERE run_id = ?", (run_id,)) as cur:
            total = (await cur.fetchone())[0]
        if next_current >= total:
            await conn.execute(
                "UPDATE runbook_runs SET current_step = ?, status = ?, finished_at = ? WHERE run_id = ?",
                (next_current, "completed", finished_at, run_id),
            )
        else:
            await conn.execute("UPDATE runbook_runs SET current_step = ? WHERE run_id = ?", (next_current, run_id))
        await conn.commit()
        await audit_log(
            AuditEvent(
                event="runbook.step.completed",
                operator_id=operator_id or "unknown",
                node_id=None,
                status=step_status,
                duration_ms=duration_ms,
                data={
                    "run_id": run_id,
                    "step_index": step_index,
                    "action_type": action_type,
                    "result_ok": auto_ok,
                    "exit_code": result.get("exit_code"),
                    "timeout": result.get("timeout"),
                },
            )
        )
        return {
            "type": action_type,
            "step_index": step_index,
            "title": title,
            "result": result,
            "step_status": step_status,
            "next_step": next_current,
            "completed": next_current >= total,
        }

    # manual
    instructions = action_json.get("instructions_md") or title
    return {
        "type": "manual",
        "step_index": step_index,
        "title": title,
        "section": section,
        "instructions_md": instructions,
    }


async def complete_step(
    run_id: str,
    step_index: int,
    status: str = "ok",
    notes: str = "",
    data: Optional[Dict[str, Any]] = None,
    operator_id: str = "",
) -> bool:
    """Record manual step completion, advance current_step."""
    if status not in ("ok", "warn", "fail", "skipped"):
        status = "ok"
    conn = await _db.get_db()
    async with conn.execute(
        "SELECT current_step FROM runbook_runs WHERE run_id = ? AND runbook_runs.status IN ('running','paused')",
        (run_id,),
    ) as cur:
        row = await cur.fetchone()
    if not row or row[0] != step_index:
        return False
    finished_at = _now_ts()
    result_json = json.dumps({"status": status, "notes": notes[:500], **(data or {})}, separators=(",", ":"))
    await conn.execute(
        "UPDATE runbook_steps SET status = ?, result_json = ?, finished_at = ? WHERE run_id = ? AND step_index = ?",
        (status, result_json, finished_at, run_id, step_index),
    )
    next_current = step_index + 1
    async with conn.execute("SELECT COUNT(*) FROM runbook_steps WHERE run_id = ?", (run_id,)) as cur:
        total = (await cur.fetchone())[0]
    if next_current >= total:
        await conn.execute(
            "UPDATE runbook_runs SET current_step = ?, status = ?, finished_at = ? WHERE run_id = ?",
            (next_current, "completed", finished_at, run_id),
        )
    else:
        await conn.execute("UPDATE runbook_runs SET current_step = ? WHERE run_id = ?", (next_current, run_id))
    await conn.commit()
    await audit_log(
        AuditEvent(
            event="runbook.step.completed",
            operator_id=operator_id or "unknown",
            status=status,
            data={"run_id": run_id, "step_index": step_index, "action_type": "manual"},
        )
    )
    return True


async def abort_run(run_id: str, operator_id: str = "") -> bool:
    """Set status=aborted, audit."""
    conn = await _db.get_db()
    async with conn.execute("SELECT 1 FROM runbook_runs WHERE run_id = ?", (run_id,)) as cur:
        if not await cur.fetchone():
            return False
    now = _now_ts()
    await conn.execute(
        "UPDATE runbook_runs SET status = ?, finished_at = ? WHERE run_id = ?",
        ("aborted", now, run_id),
    )
    await conn.commit()
    await audit_log(
        AuditEvent(
            event="runbook.run.aborted",
            operator_id=operator_id or "unknown",
            status="ok",
            data={"run_id": run_id},
        )
    )
    return True