# VESTI Web — локальный интерфейс управления (FastAPI + Jinja2 + Bootstrap 5.3 + HTMX).
# Спека vesti-web: 127.0.0.1:8400, авторизация (пароль в .env), списки кандидатов,
# подтверждение/отклонение черновиков (→ tg-publisher + банк), опубликованные с метриками.

import json
import os
import secrets
import sqlite3
from datetime import datetime
from pathlib import Path
from urllib.parse import quote

import markdown as md_lib
from fastapi import FastAPI, Form, HTTPException, Request, Response
from fastapi.responses import FileResponse, HTMLResponse, RedirectResponse
from fastapi.staticfiles import StaticFiles
from jinja2 import Environment, FileSystemLoader
from markupsafe import Markup, escape

try:  # bleach — санитайзер HTML из RSS (allowlist); см. requirements.txt
    import bleach
except ImportError:
    bleach = None

# CRUD источников: работа с sources.yaml (источник истины) + БД синк
from sources.sources import (
    db_source_to_yaml,
    add_or_update_source, delete_source, set_source_enabled,
)

BASE_DIR = Path(__file__).resolve().parent.parent
DB_PATH = BASE_DIR / "db" / "vesti.db"
TPL_DIR = Path(__file__).resolve().parent / "templates"
STATIC_DIR = Path(__file__).resolve().parent / "static"
# Медиа постов: свежие — media/<file>; старые (исторический баг) — media/media/<file>
MEDIA_DIRS = [
    BASE_DIR / "media",
    BASE_DIR / "media" / "media",
]

# Авторизация: одна учётка, пароль из .env (VESTI_WEB_PASSWORD или ADMIN_PASSWORD — legacy имя)
WEB_PASSWORD = os.getenv("VESTI_WEB_PASSWORD") or os.getenv("ADMIN_PASSWORD") or "admin"  # TODO: в проде только из .env
SESSION_COOKIE = "vesti_session"

app = FastAPI(title="VESTI Web")
app.mount("/static", StaticFiles(directory=str(STATIC_DIR)), name="static")
tpl = Environment(loader=FileSystemLoader(str(TPL_DIR)))
tpl.filters["from_json"] = lambda s: json.loads(s or "[]")


def md_filter(text: str) -> Markup:
    """Markdown → безопасный HTML (экранируем HTML до парсинга, XSS-safe)."""
    if not text:
        return Markup("")
    html = md_lib.markdown(escape(text), extensions=["nl2br", "sane_lists"])
    return Markup(html)


# Теги/атрибуты, разрешённые в текстах из RSS (безопасное подмножество HTML).
_SAFE_TAGS = [
    "p", "br", "b", "strong", "i", "em", "u", "s", "strike", "del",
    "a", "ul", "ol", "li", "blockquote", "pre", "code", "h1", "h2", "h3",
    "h4", "h5", "h6", "table", "thead", "tbody", "tr", "th", "td",
]
_SAFE_ATTRS = {"a": ["href", "title", "rel"]}
_SAFE_PROTOCOLS = ["http", "https", "mailto"]


def safe_html_filter(text: str) -> Markup:
    """Исходный текст из RSS → безопасный HTML (allowlist-санитайзер).

    Сохраняет «заложенное форматирование» (жирный, ссылки, списки, абзацы),
    вырезает всё опасное (script/style/on*/iframe/svg/...) и делает ссылки
    кликабельными (linkify). Для markdown-пересказов/комментариев НЕ используется —
    они идут через md_filter.
    """
    if not text:
        return Markup("")
    if bleach is None:
        # запасной вариант без bleach — экранируем (безопасно, но без разметки)
        return Markup(md_lib.markdown(escape(text), extensions=["nl2br", "sane_lists"]))
    try:
        cleaned = bleach.clean(
            text,
            tags=_SAFE_TAGS,
            attributes=_SAFE_ATTRS,
            protocols=_SAFE_PROTOCOLS,
            strip=True,
        )
        cleaned = bleach.linkify(cleaned, parse_email=True)
        return Markup(cleaned)
    except Exception:
        return Markup(escape(text))


def dt_filter(value) -> str:
    """2026-08-15T15:53 → 15:53 15.08.2026; None/мусор → ''."""
    if not value:
        return ""
    try:
        if isinstance(value, str):
            value = datetime.fromisoformat(value.replace("Z", "+00:00"))
        return value.strftime("%H:%M %d.%m.%Y")
    except (ValueError, TypeError):
        return str(value)[:16] if value else ""


tpl.filters["markdown"] = md_filter
tpl.filters["safe_html"] = safe_html_filter
tpl.filters["dt"] = dt_filter


def _db() -> sqlite3.Connection:
    conn = sqlite3.connect(DB_PATH, timeout=10)
    conn.row_factory = sqlite3.Row
    conn.execute("PRAGMA journal_mode=WAL")
    conn.execute("PRAGMA busy_timeout=8000")
    return conn


def _migrate():
    """Идемпотентные миграции при старте веб-сервиса."""
    conn = sqlite3.connect(DB_PATH, timeout=10)
    try:
        cols = [r[1] for r in conn.execute("PRAGMA table_info(posts)").fetchall()]
        if "is_read" not in cols:
            conn.execute("ALTER TABLE posts ADD COLUMN is_read INTEGER DEFAULT 0")
            conn.commit()
    finally:
        conn.close()


_migrate()


def _session_ok(request: Request) -> bool:
    return request.cookies.get(SESSION_COOKIE) == os.getenv("VESTI_WEB_SESSION", "")


def _require_auth(request: Request):
    if not _session_ok(request):
        raise HTTPException(status_code=303, headers={"Location": "/login"})


@app.get("/", response_class=HTMLResponse)
def index(request: Request):
    _require_auth(request)
    return RedirectResponse(url="/candidates", status_code=302)


@app.get("/login", response_class=HTMLResponse)
def login_page(request: Request):
    if _session_ok(request):
        return RedirectResponse(url="/candidates", status_code=302)
    return HTMLResponse(tpl.get_template("login.html").render(request=request))


@app.post("/login")
def login(request: Request, password: str = Form(...)):
    if secrets.compare_digest(password, WEB_PASSWORD):
        sess = secrets.token_hex(16)
        # сохраняем сессию (в проде — в env; для прототипа — атрибут)
        os.environ["VESTI_WEB_SESSION"] = sess
        resp = RedirectResponse(url="/candidates", status_code=302)
        resp.set_cookie(SESSION_COOKIE, sess, httponly=True)
        return resp
    return RedirectResponse(url="/login?error=1", status_code=302)


DIRECTIONS = ["linux", "tech", "politics", "games", "electronics", "llm"]


class _Row(dict):
    """sqlite3.Row → dict с доступом через точку (для шаблонов)."""

    def __getattr__(self, k):
        try:
            return self[k]
        except KeyError:
            raise AttributeError(k)


def _row(r):
    return _Row(dict(r)) if r is not None else None


def _cand_back(group_by: str = "", direction: str = "", own: str = "", q: str = "",
               src: str = "candidates", **extra):
    """URL возврата в список (src: candidates|selected) с сохранением группировки и фильтров."""
    parts = []
    if group_by:
        parts.append(f"group_by={quote(group_by)}")
    if direction:
        parts.append(f"direction={quote(direction)}")
    if own in ("0", "1"):
        parts.append(f"own={own}")
    if q:
        parts.append(f"q={quote(q)}")
    for k, v in extra.items():
        if v:
            parts.append(f"{k}={quote(str(v))}")
    return (f"/{src}?" + "&".join(parts)) if parts else f"/{src}"


STATUS_LABELS = {
    "new": "💎 Новые",
    "selected": "⭐ Отобранные",
    "rejected": "🗑 Отклонённые",
    "published": "✅ Опубликованные",
    "": "Все",
}
STATUS_COLORS = {"new": "success", "selected": "warning", "rejected": "danger", "published": "primary"}


def _group_label(group_by: str, key: str) -> str:
    """Человекочитаемая подпись группы для списка кандидатов."""
    if group_by == "source":
        return key or "без источника"
    if group_by == "date":
        if key == "today":
            return "Сегодня"
        if key == "yesterday":
            return "Вчера"
        if key == "week":
            return "Ранее на этой неделе"
        return f"Ранее · {key}"
    # status
    return STATUS_LABELS.get(key, key or "?")


def _fetch_candidates(conn, direction: str, status: str, own: str, q: str, group_by: str, limit: int = 200):
    """Выборка кандидатов для левой панели. Возвращает (grouped, counts, flat).
    flat — сгруппированный список; counts — {статус: число} для фильтра-табов."""
    where = []
    params = []
    # Кандидаты = только внешние (is_own=0) посты в статусе new.
    # Свои посты канала (is_own=1) не являются кандидатами — это контент
    # собственного канала, управляется отдельно (fan-out); published/rejected —
    # уже решённые посты, им не место в очереди кандидатов.
    where.append("p.is_own=0")
    if not status:
        # по умолчанию — только кандидаты (new); явный статус ниже
        where.append("p.status='new'")
    else:
        # явный статус (new/rejected/published) — единственный фильтр статуса
        where.append("p.status=?")
        params.append(status)
    if direction:
        where.append("p.direction=?")
        params.append(direction)
    if own in ("1", "0"):
        where.append("p.is_own=?")
        params.append(int(own))
    if q:
        where.append("(p.text LIKE ? OR p.summary LIKE ?)")
        params += [f"%{q}%", f"%{q}%"]
    w = ("WHERE " + " AND ".join(where)) if where else ""
    sql = f"""SELECT p.*, s.name source_name, s.slug source_slug, s.lang source_lang,
                     s.direction AS source_direction
              FROM posts p LEFT JOIN sources s ON s.id=p.source_id
              {w}"""
    rows = conn.execute(sql + " ORDER BY COALESCE(p.published_at,p.fetched_at) DESC LIMIT ?", params + [limit]).fetchall()
    # counts для табов статуса: сколько кандидатов (внешних new) и сколько
    # решённых (rejected/published) доступно для просмотра.
    counts = {r["status"]: r["c"] for r in conn.execute(
        "SELECT p.status, COUNT(*) c FROM posts p WHERE p.is_own=0 GROUP BY p.status",
    )}
    counts[""] = sum(counts.values())
    # статус по умолчанию для табов: если в выборке нет ничего "нового" — смотрим rejected
    if status == "new" and not rows:
        for s in ("rejected", "published"):
            if counts.get(s):
                status = s
                break

    flat = []
    for r in rows:
        d = dict(r)
        d["source_name"] = d.get("source_name") or d.get("tg_channel") or "?"
        flat.append(_Row(d))

    # группировка
    import itertools

    def _key_source(p):
        return p["source_name"] or "?"

    def _key_date(p):
        from datetime import date, timedelta
        today = date.today()
        ts = p.get("published_at") or p.get("fetched_at") or ""
        d = None
        try:
            d = datetime.fromisoformat(str(ts)[:19]).date()
        except ValueError:
            pass
        if d is None:
            return "other"
        if d == today:
            return "today"
        if d == today - timedelta(days=1):
            return "yesterday"
        if (today - d).days <= 7:
            return "week"
        return f"{d:%m.%Y}"

    def _key_status(p):
        return p["status"]

    keyf = {"source": _key_source, "date": _key_date, "status": _key_status}[group_by]

    def _group_status(items):
        """Статус группы: приоритет new > rejected > published, иначе — первый.
        При группировке по дате первый пост группы — свежайший и может быть
        published/rejected, хотя вся группа — новые кандидаты; статус группы
        должен отражать состав, а не первый пост."""
        st = [p["status"] for p in items]
        for s in ("new", "rejected", "published"):
            if s in st:
                return s
        return items[0]["status"]

    grouped = []
    for k, it in itertools.groupby(sorted(flat, key=keyf), key=keyf):
        items = list(it)
        grouped.append({
            "key": k,
            "label": _group_label(group_by, k),
            "status": _group_status(items),
            "posts": items,
        })
    # порядок групп: new → rejected → published (для status), иначе по ключу
    if group_by == "status":
        grouped.sort(key=lambda g: {"new": 0, "rejected": 1, "published": 2, "": 3}.get(g["key"], 9))
    return grouped, counts, status


@app.get("/candidates", response_class=HTMLResponse)
def candidates(request: Request, direction: str = "", status: str = "", own: str = "",
               q: str = "", group_by: str = "date", selected: int = 0, error: str = ""):
    _require_auth(request)
    conn = _db()
    grouped, counts, status = _fetch_candidates(conn, direction, status, own, q, group_by)
    # выбор по умолчанию: первый кандидат списка (или указанный selected)
    sel = None
    if grouped:
        sel = grouped[0]["posts"][0]
        if selected:
            for g in grouped:
                for it in g["posts"]:
                    if it["id"] == selected:
                        sel = it
                        break
                else:
                    continue
                break
    # открытие поста = прочтение (как в почте): сразу помечаем, чтобы карточка перестала быть жирной
    if sel is not None and sel["id"]:
        conn.execute("UPDATE posts SET is_read=1 WHERE id=? AND is_read=0", (sel["id"],))
        sel["is_read"] = 1
    conn.commit()
    conn.close()
    # строка параметров фильтров для ссылок (выбор поста, смена группировки)
    qs = []
    for k, v in (("direction", direction), ("status", status), ("own", own), ("q", q)):
        if v:
            qs.append(f"{k}={quote(v)}")
    if not selected:
        selected = sel["id"] if sel else 0
    filters_qs = "&".join(qs)
    html = tpl.get_template("candidates.html").render(
        posts=grouped, counts=counts, status=status, direction=direction, own=own,
        q=q, group_by=group_by, selected=sel, error=error, filters_qs=filters_qs,
        directions=DIRECTIONS, STATUS_LABELS=STATUS_LABELS, STATUS_COLORS=STATUS_COLORS,
    )
    return HTMLResponse(html)


@app.get("/selected", response_class=HTMLResponse)
def selected(request: Request, direction: str = "", own: str = "", q: str = "",
             group_by: str = "date", selected: int = 0, error: str = ""):
    """Отобранные: только status='selected' (внешние). Полная обработка постов."""
    _require_auth(request)
    conn = _db()
    # отобранные = внешние посты со статусом selected
    grouped, counts, _ = _fetch_candidates(conn, direction, "selected", own, q, group_by)
    counts = {}
    sel = None
    if grouped:
        sel = grouped[0]["posts"][0]
        if selected:
            for g in grouped:
                for it in g["posts"]:
                    if it["id"] == selected:
                        sel = it
                        break
                else:
                    continue
                break
    if sel is not None and sel["id"]:
        conn.execute("UPDATE posts SET is_read=1 WHERE id=? AND is_read=0", (sel["id"],))
        sel["is_read"] = 1
    conn.commit()
    conn.close()
    qs = []
    for k, v in (("direction", direction), ("own", own), ("q", q)):
        if v:
            qs.append(f"{k}={quote(v)}")
    if not selected:
        selected = sel["id"] if sel else 0
    filters_qs = "&".join(qs)
    html = tpl.get_template("selected.html").render(
        posts=grouped, counts=counts, status="selected", direction=direction, own=own,
        q=q, group_by=group_by, selected=sel, error=error, filters_qs=filters_qs,
        directions=DIRECTIONS, STATUS_LABELS=STATUS_LABELS, STATUS_COLORS=STATUS_COLORS,
    )
    return HTMLResponse(html)


@app.post("/posts/{post_id}/select")
def post_select(post_id: int, request: Request,
                group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form("")):
    """Отобрать кандидата (new → selected). Остаёмся на странице кандидатов."""
    _require_auth(request)
    conn = _db()
    conn.execute("UPDATE posts SET status='selected' WHERE id=? AND status='new' AND is_own=0", (post_id,))
    conn.commit()
    conn.close()
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src="candidates"), status_code=302)


@app.post("/candidates/select")
def candidates_select(request: Request, id: int = Form(...), direction: str = Form(""),
                      status: str = Form(""), own: str = Form(""), q: str = Form(""), group_by: str = Form("date")):
    """Выбор кандидата левой панели (обычная форма без JS)."""
    _require_auth(request)
    url = f"/candidates?selected={id}&group_by={group_by}"
    for k, v in (("direction", direction), ("status", status), ("own", own), ("q", q)):
        if v:
            url += f"&{k}={v}"
    return RedirectResponse(url=url, status_code=302)


@app.post("/candidates/bulk")
def candidates_bulk(request: Request, action: str = Form(...), ids: list[int] = Form(default_factory=list),
                    direction: str = Form(""), status: str = Form(""), own: str = Form(""),
                    q: str = Form(""), group_by: str = Form("date"), src: str = Form("candidates")):
    """Bulk-операции: select/reject/reject-old/process/approve по отмеченным ids.
    src — откуда вызывались (candidates|selected), туда и возвращаемся."""
    _require_auth(request)
    back = f"/{src}?group_by={group_by}"
    for k, v in (("direction", direction), ("status", status), ("own", own), ("q", q)):
        if v:
            back += f"&{k}={quote(v)}"
    if not ids:
        return RedirectResponse(url=back + "&error=no_selection", status_code=302)
    conn = _db()
    ph = ", ".join("?" * len(ids))
    rows = conn.execute(f"SELECT * FROM posts WHERE id IN ({ph})", ids).fetchall()
    if action == "select":
        # отбор кандидатов (new → selected); остаёмся на странице кандидатов
        conn.execute("UPDATE posts SET status='selected' WHERE id IN ({}) AND status='new' AND is_own=0".format(ph), ids)
        conn.commit()
        conn.close()
        return RedirectResponse(url=back, status_code=302)
    if action == "reject":
        conn.execute(f"UPDATE posts SET status='rejected' WHERE id IN ({ph})", ids)
        conn.commit()
        conn.close()
        # остаёмся в текущем списке (кандидаты/отобранные), не уходим в отклонённые
        return RedirectResponse(url=back, status_code=302)
    if action == "reject-old":
        # все выбранные, кроме самых свежих (по 1 от источника) — «почистить старьё»
        keep = {}
        for r in rows:
            key = r["source_id"]
            keep.setdefault(key, r["id"])
        kill = [r["id"] for r in rows if r["id"] not in keep.values()]
        if kill:
            ph2 = ", ".join("?" * len(kill))
            conn.execute(f"UPDATE posts SET status='rejected' WHERE id IN ({ph2})", kill)
            conn.commit()
        conn.close()
        return RedirectResponse(url=back, status_code=302)
    conn.close()
    if action == "process":
        # обработка локальной моделью (переклассификация) по выбранным
        errs = []
        done = 0
        for r in rows:
            try:
                impl_reclassify(int(r["id"]))
                done += 1
            except Exception as e:
                errs.append(f"{r['id']}({e})")
        if errs:
            return RedirectResponse(url=f"/{src}?error=process_partial:{','.join(map(str,errs))[:120]}&group_by={group_by}", status_code=302)
        return RedirectResponse(url=back + "&error=processed:" + str(done), status_code=302)
    if action == "rewrite":
        # сгенерировать черновик своего поста для каждого выбранного
        errs = []
        done = 0
        for r in rows:
            try:
                from classifier.classify import call_ollama
                d = dict(r)
                text_ = (d.get("text") or "")[:2000]
                prompt = (
                    "Ты — редактор новостей. Перепиши новость СВОИМИ словами от первого лица\n"
                    "(как автор канала «Дед в АйТи»), без копипасты и без канцелярита. Сохрани смысл,\n"
                    "факты и ссылку на оригинал. Верни ТОЛЬКО текст пересказа, без пояснений.\n\n"
                    f"Оригинал:\n{text_}"
                )
                res = call_ollama(prompt, 0, 0, str(d.get("direction") or ""))
                draft = (res.get("text") or res.get("content") or "").strip() or res.get("summary") or ""
                if draft:
                    conn = _db()
                    conn.execute("UPDATE posts SET rewritten_text=? WHERE id=?", (draft, int(r["id"])))
                    conn.commit()
                    conn.close()
                    done += 1
                else:
                    errs.append(f"{r['id']}(empty)")
            except Exception as e:
                errs.append(f"{r['id']}({e})")
        errq = ("&error=rewrite_partial:" + ",".join(map(str, errs))[:120]) if errs else ""
        return RedirectResponse(url=back + "&error=rewritten:" + str(done) + errq, status_code=302)
    # approve — каждый через существующую логику (публикация + бандл)
    errs = []
    for r in rows:
        if r["status"] == "published":
            continue
        err = impl_approve(int(r["id"]))
        if err:
            errs.append(f"{r['id']}({err})")
    if errs:
        return RedirectResponse(url=f"/{src}?error=bulk_partial:{','.join(map(str,errs))[:120]}&group_by={group_by}", status_code=302)
    return RedirectResponse(url="/published", status_code=302)


@app.post("/posts/{post_id}/rewrite-save")
async def post_rewrite_save(post_id: int, request: Request,
                            group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form(""),
                            src: str = Form("candidates")):
    """Сохраняет отредактированный пользователем пересказ (rewritten_text)."""
    _require_auth(request)
    conn = _db()
    p = conn.execute("SELECT id FROM posts WHERE id=?", (post_id,)).fetchone()
    if not p:
        conn.close()
        return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, error="notfound"), status_code=302)
    form = await request.form()
    draft = str(form.get("rewritten_text") or "").strip()
    conn.execute("UPDATE posts SET rewritten_text=? WHERE id=?", (draft or None, post_id))
    conn.commit()
    conn.close()
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id), status_code=302)


@app.post("/posts/{post_id}/comment")
def post_comment(post_id: int, request: Request, comment: str = Form(""),
                 group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form(""),
                 src: str = Form("candidates")):
    _require_auth(request)
    conn = _db()
    conn.execute("UPDATE posts SET comment=? WHERE id=?", (comment.strip(), post_id))
    conn.commit()
    conn.close()
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id), status_code=302)


@app.post("/posts/{post_id}/reclassify")
def post_reclassify(post_id: int, request: Request,
                    group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form(""),
                    src: str = Form("candidates")):
    """Переклассификация локальной моделью (qwen)."""
    _require_auth(request)
    try:
        impl_reclassify(post_id)
    except Exception as e:
        return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id, error=f"reclassify:{e}"), status_code=302)
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id), status_code=302)


def impl_reclassify(post_id: int):
    """Перезапуск классификации локальной моделью. Бросает исключение при неудаче."""
    from classifier.classify import classify_text
    conn = _db()
    p = conn.execute("SELECT * FROM posts WHERE id=?", (post_id,)).fetchone()
    if not p:
        conn.close()
        raise ValueError("notfound")
    res = classify_text(dict(p))
    conn.execute(
        "UPDATE posts SET direction=?, relevance=?, interest=?, summary=?, classified=? WHERE id=?",
        (res["direction"], res["relevance"], res["interest"], res["summary"], 1 if res["classified"] else 0, post_id),
    )
    conn.commit()
    conn.close()


@app.post("/posts/{post_id}/rewrite")
def post_rewrite(post_id: int, request: Request,
                 group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form(""),
                 src: str = Form("candidates")):
    _require_auth(request)
    from classifier.classify import call_ollama
    conn = _db()
    p = conn.execute("SELECT * FROM posts WHERE id=?", (post_id,)).fetchone()
    if not p:
        conn.close()
        return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, error="notfound"), status_code=302)
    d = dict(p)
    text_ = (d.get("text") or "")[:2000]
    prompt = (
        "Ты — редактор новостей. Перепиши новость СВОИМИ словами от первого лица\n"
        "(как автор канала «Дед в АйТи»), без копипасты и без канцелярита. Сохрани смысл,\n"
        "факты и ссылку на оригинал. Верни ТОЛЬКО текст пересказа, без пояснений.\n\n"
        f"Оригинал:\n{text_}"
    )
    try:
        r = call_ollama(prompt, 0, 0, str(d.get("direction") or ""))
        draft = (r.get("text") or r.get("content") or "").strip()
        if not draft:
            draft = r.get("summary") or ""
    except Exception as e:
        conn.close()
        return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id, error=f"rewrite:{e}"), status_code=302)
    conn.execute("UPDATE posts SET rewritten_text=? WHERE id=?", (draft, post_id))
    conn.commit()
    conn.close()
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id), status_code=302)


@app.get("/published", response_class=HTMLResponse)
def published(request: Request):
    _require_auth(request)
    conn = _db()
    rows = conn.execute(
        """SELECT p.*, s.name source_name,
                  pub.tg_message_id, pub.views pub_views, pub.bundle_path, pub.distributed_dirs
           FROM posts p
           LEFT JOIN sources s ON s.id=p.source_id
           LEFT JOIN published pub ON pub.post_id=p.id
           WHERE p.status='published' ORDER BY p.published_at DESC LIMIT 100"""
    ).fetchall()
    conn.close()
    html = tpl.get_template("published.html").render(posts=rows)
    return HTMLResponse(html)


def impl_approve(post_id: int, comment: str = "", dirs_selected: list[str] | None = None) -> str | None:
    """Публикация поста: publisher + бандл + статус published. Возвращает None при успехе,
    строку ошибки при неудаче (для bulk — собираем ошибки, для POST — редирект с error)."""
    from web.publisher_client import publish as http_publish
    from publisher.card import make_card
    from web.store import create_bundle

    conn = _db()
    post = conn.execute("SELECT p.*, s.name source_name, s.lang FROM posts p LEFT JOIN sources s ON s.id=p.source_id WHERE p.id=?", (post_id,)).fetchone()
    if not post:
        conn.close()
        return "notfound"
    post = dict(post)
    is_own = int(post.get("is_own") or 0) == 1
    dirn = post.get("direction") or "linux"
    lang = post.get("lang") or "ru"

    if dirs_selected is None:
        # по умолчанию: направления классификации (classifications) или направление поста
        cls = conn.execute("SELECT direction FROM classifications WHERE post_id=? ORDER BY id", (post_id,)).fetchall()
        dirs_selected = [r["direction"] for r in cls] if cls else [dirn]
    dirs_selected = list(dict.fromkeys([d for d in dirs_selected if d]))

    card = make_card(post, comment)
    card["direction"] = dirn
    card["lang"] = lang

    try:
        res = http_publish(card)
    except RuntimeError as e:
        conn.close()
        return f"publisher:{e}"

    _res = res.get("results", {})
    # свой контент: ключи — направления; внешний: ключи — каналы
    if is_own:
        tg_message_id = next(iter((r or {}).get("message_id") or 0 for r in _res.values()), 0) if res else 0
        views_by_dir = {d: (r.get("views") or 0) for d, r in _res.items()}
    else:
        tg_message_id = next((r.get("message_id") or 0 for r in _res.values() if r.get("message_id")), 0) if _res else 0
        views_by_dir = {d: (r.get("views") or 0) for d, r in _res.items()}

    # банк статей (markdown-бандл + медиа) — по каждому направлению fan-out
    try:
        bundle = create_bundle(post, bundles_dir=BASE_DIR / "bundles", directions=dirs_selected)
    except Exception as e:
        bundle = {"error": str(e)}

    import json as _json
    conn.execute("UPDATE posts SET status='published', comment=? WHERE id=?", (comment.strip(), post_id))
    distributed = _json.dumps(dirs_selected, ensure_ascii=False) if is_own else _json.dumps([dirn])
    conn.execute(
        "INSERT INTO published (post_id, bundle_path, tg_message_id, distributed_dirs, views) VALUES (?,?,?,?,?)",
        (post_id, bundle.get("path", ""), tg_message_id, distributed, sum(views_by_dir.values())),
    )
    conn.commit()
    conn.close()
    return None


@app.post("/posts/{post_id}/approve")
async def approve(post_id: int, request: Request,
                  group_by: str = Form(""), direction: str = Form(""), own: str = Form(""), q: str = Form(""),
                  src: str = Form("candidates")):
    """Подтверждение черновика → публикация в TG (fan-out по направлениям) + создание бандла + статус published."""
    _require_auth(request)
    # направления fan-out: из формы (чекбоксы) — по умолчанию направления классификации или направление поста
    dirs_selected: list[str] = []
    comment = ""
    try:
        form = await request.form()
        dirs_selected = [str(d) for d in form.getlist("dirs")]
        comment = str(form.get("comment") or "").strip()
    except Exception:
        pass
    err = impl_approve(post_id, comment, dirs_selected)
    if err:
        return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, selected=post_id, error=err), status_code=302)
    # после публикации остаёмся в своей группировке, смотрим опубликованные
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src, status="published"), status_code=302)


@app.post("/posts/{post_id}/reject")
def reject(post_id: int, request: Request, group_by: str = Form(""), direction: str = Form(""),
           own: str = Form(""), q: str = Form(""), src: str = Form("candidates")):
    _require_auth(request)
    conn = _db()
    conn.execute("UPDATE posts SET status='rejected' WHERE id=?", (post_id,))
    conn.commit()
    conn.close()
    # после отклонения остаёмся на странице, откуда пришли (кандидаты/отобранные),
    # в той же группировке/фильтрах; список отклонённых — через фильтр «🗑 Отклонённые»
    return RedirectResponse(url=_cand_back(group_by, direction, own, q, src=src), status_code=302)


@app.get("/metrics", response_class=HTMLResponse)
def metrics(request: Request):
    _require_auth(request)
    conn = _db()
    rows = conn.execute(
        """SELECT p.direction, COUNT(*) cnt, SUM(p.views) views, AVG(p.reactions_total) avg_reactions
           FROM posts p GROUP BY p.direction"""
    ).fetchall()
    runs = conn.execute("SELECT * FROM runs ORDER BY started_at DESC LIMIT 10").fetchall()
    conn.close()
    html = tpl.get_template("metrics.html").render(dirs=rows, runs=runs)
    return HTMLResponse(html)


@app.get("/crawlers", response_class=HTMLResponse)
def crawlers(request: Request):
    """Страница статуса краулеров: источники (alive/dead, last_fetch) + размер очереди."""
    _require_auth(request)
    conn = _db()
    # источники + rss_state (для RSS — etag/modified/last_build_date/ошибки)
    sources = conn.execute(
        """SELECT s.id, s.slug, s.name, s.crawler, s.status, s.last_fetch, s.last_error,
                  s.priority, s.enabled,
                  COALESCE(rs.etag, '') AS etag, COALESCE(rs.modified, '') AS modified,
                  COALESCE(rs.last_build_date, '') AS last_build_date,
                  COALESCE(rs.error_count, 0) AS error_count,
                  COALESCE(s.last_error, rs.last_error) AS last_error
           FROM sources s LEFT JOIN rss_state rs ON rs.slug=s.slug
           ORDER BY s.enabled DESC, s.priority, s.slug"""
    ).fetchall()
    # очередь (постов), карточки
    pending = conn.execute(
        "SELECT COUNT(*) FROM posts WHERE classified IS NULL OR classified=0"
    ).fetchone()[0]
    processing = conn.execute(
        "SELECT COUNT(*) FROM posts WHERE classified=-1"
    ).fetchone()[0]
    done_today = conn.execute(
        "SELECT COUNT(*) FROM posts WHERE classified=1 AND fetched_at >= date('now')"
    ).fetchone()[0]
    # статусы источников для бейджей
    alive = conn.execute("SELECT COUNT(*) FROM sources WHERE enabled=1 AND status='alive'").fetchone()[0]
    dead = conn.execute("SELECT COUNT(*) FROM sources WHERE enabled=1 AND status='dead'").fetchone()[0]
    total_sources = conn.execute("SELECT COUNT(*) FROM sources WHERE enabled=1").fetchone()[0]
    # последние запуски
    runs = conn.execute(
        """SELECT r.*, s.slug, s.name AS source_name FROM runs r
           LEFT JOIN sources s ON s.id=r.source_id ORDER BY r.id DESC LIMIT 12"""
    ).fetchall()
    conn.close()
    html = tpl.get_template("crawlers.html").render(
        request=request, sources=sources, pending=pending, processing=processing, done_today=done_today,
        alive=alive, dead=dead, total_sources=total_sources, runs=runs,
    )
    return HTMLResponse(html)


@app.post("/crawlers/reset")
def crawlers_reset(request: Request):
    """Сброс dead-источников в alive (после починки)."""
    _require_auth(request)
    conn = _db()
    cur = conn.execute(
        "UPDATE sources SET status='alive', error_count=0, last_error=NULL WHERE status='dead'"
    )
    conn.commit()
    conn.close()
    return RedirectResponse(url="/crawlers?reset=" + str(cur.rowcount), status_code=302)


@app.post("/crawlers/run")
async def crawlers_run(request: Request):
    """Запуск воркера (фаза 3): параллельная обработка очереди кандидатов.

    Запускается в фоне (subprocess.Popen, не блокирует веб); страница обновляется,
    очередь processing покажет прогресс. Результат — в runs/posts.
    """
    _require_auth(request)
    workers, limit = 8, 200
    try:
        form = await request.form()
        workers = int(str(form.get("workers") or 8))
        limit = int(str(form.get("limit") or 200))
    except Exception:
        pass
    try:
        import subprocess
        py = str(Path(__file__).resolve().parent.parent / ".venv" / "bin" / "python")
        log_path = Path(__file__).resolve().parent.parent / "logs" / "worker.log"
        log_path.parent.mkdir(exist_ok=True)
        with open(log_path, "a") as f:
            subprocess.Popen(
                [py, "-m", "crawler.worker", "--workers", str(workers), "--limit", str(limit)],
                cwd=str(Path(__file__).resolve().parent.parent),
                stdout=f, stderr=subprocess.STDOUT,
            )
    except Exception as e:
        return RedirectResponse(url=f"/crawlers?run=error&msg={e}", status_code=302)
    return RedirectResponse(url=f"/crawlers?run=started&workers={workers}&limit={limit}", status_code=302)


@app.get("/sources", response_class=HTMLResponse)
def sources_page(request: Request):
    """Страница управления реестром источников: таблица + добавление/редактирование."""
    _require_auth(request)
    conn = _db()
    sources = conn.execute(
        """SELECT s.*, COALESCE(rs.error_count, 0) AS error_count,
                  COALESCE(s.last_error, rs.last_error) AS last_error,
                  COALESCE(rs.etag, '') AS etag, COALESCE(rs.modified, '') AS modified
           FROM sources s LEFT JOIN rss_state rs ON rs.slug=s.slug
           ORDER BY s.enabled DESC, s.priority, s.slug"""
    ).fetchall()
    conn.close()
    html = tpl.get_template("sources.html").render(
        request=request, sources=sources,
        did=request.query_params.get("did", ""),
    )
    return HTMLResponse(html)


def _form_source(form) -> dict:
    """Собирает источник из формы (str поля, None для пустых)."""
    def s(k, default=None):
        v = form.get(k)
        return (v or "").strip() if v else default
    return {
        "slug": s("slug"),
        "name": s("name"),
        "url": s("url"),
        "channel": s("channel"),
        "crawler": s("crawler", "telegram"),
        "feed_url": s("feed_url"),
        "direction": s("direction"),
        "lang": s("lang", "ru"),
        "priority": s("priority", "P1"),
        "enabled": bool(form.get("enabled")),
        "own": bool(form.get("own")),
    }


@app.post("/sources/add")
async def sources_add(request: Request):
    """Добавление источника: валидация → sources.yaml → полный ре-синк в БД."""
    _require_auth(request)
    form = await request.form()
    src = _form_source(form)
    ok, res = add_or_update_source(src)
    if not ok:
        return RedirectResponse(url=f"/sources?did=error:{res}", status_code=302)
    return RedirectResponse(url=f"/sources?did=added:{res}", status_code=302)


@app.post("/sources/{source_id}/edit")
async def sources_edit(source_id: int, request: Request):
    """Редактирование источника: обновляем yaml (slug не меняем) + полный ре-синк."""
    _require_auth(request)
    conn = _db()
    row = conn.execute("SELECT * FROM sources WHERE id=?", (source_id,)).fetchone()
    conn.close()
    if not row:
        return RedirectResponse(url="/sources?did=error:не найден", status_code=302)
    form = await request.form()
    src = db_source_to_yaml(dict(row))
    # текстовые поля
    for k in ("name", "url", "channel", "crawler", "feed_url", "direction", "lang", "priority"):
        if k in form:
            v = str(form.get(k) or "").strip()
            src[k] = v or None
    # чекбоксы
    src["enabled"] = bool(form.get("enabled"))
    src["own"] = bool(form.get("own"))
    ok, res = add_or_update_source(src)
    if not ok:
        return RedirectResponse(url=f"/sources?did=error:{res}", status_code=302)
    return RedirectResponse(url=f"/sources?did=updated:{res}", status_code=302)


@app.post("/sources/{source_id}/toggle")
async def sources_toggle(source_id: int, request: Request):
    """Пауза/возобновление: flip enabled в yaml + БД."""
    _require_auth(request)
    conn = _db()
    row = conn.execute("SELECT * FROM sources WHERE id=?", (source_id,)).fetchone()
    conn.close()
    if not row:
        return RedirectResponse(url="/sources?did=error:не найден", status_code=302)
    if not set_source_enabled(row["slug"], not bool(row["enabled"])):
        return RedirectResponse(url="/sources?did=error:не найден", status_code=302)
    state = "paused" if row["enabled"] else "resumed"
    return RedirectResponse(url=f"/sources?did={state}:{row['slug']}", status_code=302)


@app.post("/sources/{source_id}/delete")
async def sources_delete(source_id: int, request: Request):
    """Удаление источника: yaml → БД, каскад (посты/раны остаются с source_id=NULL)."""
    _require_auth(request)
    conn = _db()
    row = conn.execute("SELECT * FROM sources WHERE id=?", (source_id,)).fetchone()
    conn.close()
    if not row:
        return RedirectResponse(url="/sources?did=error:не найден", status_code=302)
    if not delete_source(row["slug"]):
        return RedirectResponse(url=f"/sources?did=error:нет в yaml:{row['slug']}", status_code=302)
    return RedirectResponse(url=f"/sources?did=deleted:{row['slug']}", status_code=302)


@app.get("/logout")
def logout():
    resp = RedirectResponse(url="/login", status_code=302)
    resp.delete_cookie(SESSION_COOKIE)
    return resp


@app.get("/bundle/{bundle_path:path}")
def bundle(request: Request, bundle_path: str):
    """Показывает markdown-бандл как текст (ссылка из published)."""
    _require_auth(request)
    full = (BASE_DIR / "bundles" / bundle_path).resolve()
    # защита от path traversal
    if not str(full).startswith(str((BASE_DIR / "bundles").resolve())):
        return HTMLResponse("bad path", status_code=400)
    if not full.exists():
        return HTMLResponse("not found", status_code=404)
    return Response(full.read_text(encoding="utf-8"), media_type="text/markdown")


@app.get("/media/{filename}")
def media(request: Request, filename: str):
    """Отдаёт медиа-файл поста (из media/ или media/media/). Авторизация."""
    _require_auth(request)
    name = os.path.basename(filename)   # защита от path traversal
    if not name:
        return HTMLResponse("bad filename", status_code=400)
    for d in MEDIA_DIRS:
        f = (d / name).resolve()
        if f.exists() and f.is_file():
            return FileResponse(f)
    return HTMLResponse("not found", status_code=404)