"""
Lore notları — "lore" izni (admin + loremaster). Hikaye için küçük notlar; sonra derlenir.
Hepsi admin-only (GET dahil — özel içerik). WAF nedeniyle sadece GET/POST.
GET  /lore              → notlar (yeniden eskiye)
POST /lore              → yeni not
POST /lore/{id}         → güncelle
POST /lore/{id}/delete  → sil
"""
from fastapi import APIRouter, Depends, HTTPException
from pydantic import BaseModel, Field
from sqlalchemy import text
from sqlalchemy.ext.asyncio import AsyncSession

from deps import require_perm, get_user_perms, has_perm
from models import User, get_db

router = APIRouter(prefix="/lore", tags=["lore"])


async def _assert_owner_or_admin(db: AsyncSession, user: User, table: str, row_id: int):
    """Admin (perm '*') her şeyi düzenler/siler; diğerleri sadece kendi kaydını."""
    perms = await get_user_perms(user, db)
    if has_perm(perms, "*"):
        return
    owner = (await db.execute(text(
        f"SELECT author_id FROM {table} WHERE id=:id"
    ), {"id": row_id})).scalar_one_or_none()
    if owner is None:
        raise HTTPException(404, "Kayıt yok")
    if owner != user.id:
        raise HTTPException(403, "Sadece kendi kaydını düzenleyebilir/silebilirsin")


class NoteIn(BaseModel):
    body: str = Field(min_length=1, max_length=20000)
    body_en: str | None = Field(default=None, max_length=20000)
    tag: str | None = Field(default=None, max_length=60)
    subject_kind: str | None = Field(default=None, max_length=16)   # 'npc' | 'place' | None
    subject_id: int | None = None
    subject_label: str | None = Field(default=None, max_length=120)


class NoteOut(BaseModel):
    id: int
    body: str
    body_en: str | None
    tag: str | None
    subject_kind: str | None
    subject_id: int | None
    subject_label: str | None
    author: str | None
    author_id: int | None
    created_at: str
    updated_at: str


_NOTE_COLS = ("id,body,body_en,tag,subject_kind,subject_id,subject_label,"
              "author,author_id,created_at,updated_at")


def _author(user: User) -> str:
    return (user.display_name or "").strip() or user.email


def _row(r) -> NoteOut:
    d = dict(r)
    d["created_at"] = d["created_at"].isoformat()
    d["updated_at"] = d["updated_at"].isoformat()
    return NoteOut(**d)


@router.get("", response_model=list[NoteOut])
async def list_notes(user: User = Depends(require_perm("lore")), db: AsyncSession = Depends(get_db)):
    rows = (await db.execute(text(
        f"SELECT {_NOTE_COLS} FROM lore_notes ORDER BY id DESC"
    ))).mappings().all()
    return [_row(r) for r in rows]


@router.get("/subjects")
async def list_subjects(user: User = Depends(require_perm("lore")), db: AsyncSession = Depends(get_db)):
    """Not bağlanabilecek konular: kişiler (npcs) + yerler (map_tags)."""
    npcs = (await db.execute(text(
        "SELECT id, name, role FROM npcs ORDER BY name"
    ))).mappings().all()
    places = (await db.execute(text(
        "SELECT id, name, category FROM map_tags ORDER BY name"
    ))).mappings().all()
    return {
        "npc": [{"id": r["id"], "label": r["name"], "sub": r["role"] or ""} for r in npcs],
        "place": [{"id": r["id"], "label": r["name"], "sub": r["category"] or ""} for r in places],
    }


@router.post("", response_model=NoteOut)
async def add_note(n: NoteIn, user: User = Depends(require_perm("lore")), db: AsyncSession = Depends(get_db)):
    row = (await db.execute(text(
        "INSERT INTO lore_notes(body,body_en,tag,subject_kind,subject_id,subject_label,author,author_id) "
        "VALUES(:body,:body_en,:tag,:sk,:sid,:slabel,:author,:aid) "
        f"RETURNING {_NOTE_COLS}"
    ), {"body": n.body, "body_en": n.body_en, "tag": n.tag, "sk": n.subject_kind,
        "sid": n.subject_id, "slabel": n.subject_label,
        "author": _author(user), "aid": user.id})).mappings().one()
    await db.commit()
    return _row(row)


# ---- Temel Hikaye — uzun metin bölümleri (lore_story) ----
# ÖNEMLİ: /lore/story yolları /lore/{note_id}'den ÖNCE tanımlı olmalı (route sırası).

class StoryIn(BaseModel):
    title: str | None = Field(default=None, max_length=120)
    body: str = Field(min_length=1, max_length=200000)
    body_en: str | None = Field(default=None, max_length=200000)


class StoryOut(BaseModel):
    id: int
    title: str | None
    body: str
    body_en: str | None
    author: str | None
    author_id: int | None
    created_at: str
    updated_at: str


def _srow(r) -> StoryOut:
    d = dict(r)
    d["created_at"] = d["created_at"].isoformat()
    d["updated_at"] = d["updated_at"].isoformat()
    return StoryOut(**d)


@router.get("/story", response_model=list[StoryOut])
async def list_story(user: User = Depends(require_perm("lore")), db: AsyncSession = Depends(get_db)):
    rows = (await db.execute(text(
        "SELECT id,title,body,body_en,author,author_id,created_at,updated_at FROM lore_story ORDER BY sort_order,id"
    ))).mappings().all()
    return [_srow(r) for r in rows]


@router.post("/story", response_model=StoryOut)
async def add_story(s: StoryIn, user: User = Depends(require_perm("lore")),
                    db: AsyncSession = Depends(get_db)):
    row = (await db.execute(text(
        "INSERT INTO lore_story(title,body,body_en,author,author_id) VALUES(:title,:body,:body_en,:author,:aid) "
        "RETURNING id,title,body,body_en,author,author_id,created_at,updated_at"
    ), {"title": s.title, "body": s.body, "body_en": s.body_en, "author": _author(user), "aid": user.id})).mappings().one()
    await db.commit()
    return _srow(row)


@router.post("/story/{story_id}", response_model=StoryOut)
async def update_story(story_id: int, s: StoryIn, user: User = Depends(require_perm("lore")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "lore_story", story_id)
    row = (await db.execute(text(
        "UPDATE lore_story SET title=:title,body=:body,body_en=:body_en,updated_at=now() WHERE id=:id "
        "RETURNING id,title,body,body_en,author,author_id,created_at,updated_at"
    ), {"id": story_id, "title": s.title, "body": s.body, "body_en": s.body_en})).mappings().one_or_none()
    if not row:
        raise HTTPException(404, "Bölüm yok")
    await db.commit()
    return _srow(row)


@router.post("/story/{story_id}/delete")
async def delete_story(story_id: int, user: User = Depends(require_perm("lore")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "lore_story", story_id)
    res = await db.execute(text("DELETE FROM lore_story WHERE id=:id"), {"id": story_id})
    await db.commit()
    if res.rowcount == 0:
        raise HTTPException(404, "Bölüm yok")
    return {"deleted": story_id}


@router.post("/{note_id}", response_model=NoteOut)
async def update_note(note_id: int, n: NoteIn, user: User = Depends(require_perm("lore")),
                      db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "lore_notes", note_id)
    row = (await db.execute(text(
        "UPDATE lore_notes SET body=:body,body_en=:body_en,tag=:tag,"
        "subject_kind=:sk,subject_id=:sid,subject_label=:slabel,updated_at=now() WHERE id=:id "
        f"RETURNING {_NOTE_COLS}"
    ), {"id": note_id, "body": n.body, "body_en": n.body_en, "tag": n.tag,
        "sk": n.subject_kind, "sid": n.subject_id, "slabel": n.subject_label})).mappings().one_or_none()
    if not row:
        raise HTTPException(404, "Not yok")
    await db.commit()
    return _row(row)


@router.post("/{note_id}/delete")
async def delete_note(note_id: int, user: User = Depends(require_perm("lore")),
                      db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "lore_notes", note_id)
    res = await db.execute(text("DELETE FROM lore_notes WHERE id=:id"), {"id": note_id})
    await db.commit()
    if res.rowcount == 0:
        raise HTTPException(404, "Not yok")
    return {"deleted": note_id}