"""
Karakterler — sınıf (class) + skill tanımları ("chars" izni).
Sınıf: ne yapar, rolü. Skill: max level, ne yaptığı, bağlı sınıf.
WAF nedeniyle sadece GET/POST.
GET  /chars/classes            → sınıf listesi
POST /chars/classes            → yeni sınıf
POST /chars/classes/{id}       → güncelle
POST /chars/classes/{id}/delete→ sil
GET  /chars/skills             → skill listesi (sınıf adıyla)
POST /chars/skills             → yeni skill
POST /chars/skills/{id}        → güncelle
POST /chars/skills/{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, require_panel, get_user_perms, has_perm
from models import User, get_db

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


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


async def _assert_owner_or_admin(db: AsyncSession, user: User, table: str, row_id: int):
    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")


# ---------------- Sınıflar ----------------

class ClassIn(BaseModel):
    name: str = Field(min_length=1, max_length=80)
    summary: str | None = Field(default=None, max_length=300)
    description: str | None = Field(default=None, max_length=20000)
    notes: str | None = Field(default=None, max_length=20000)
    sort_order: int = 0


class ClassOut(BaseModel):
    id: int
    name: str
    summary: str | None
    description: str | None
    notes: str | None
    sort_order: int
    author: str | None
    author_id: int | None
    updated_at: str


def _crow(r) -> ClassOut:
    d = dict(r)
    d["updated_at"] = d["updated_at"].isoformat()
    return ClassOut(**d)


@router.get("/classes", response_model=list[ClassOut])
async def list_classes(user: User = Depends(require_panel), db: AsyncSession = Depends(get_db)):
    rows = (await db.execute(text(
        "SELECT id,name,summary,description,notes,sort_order,author,author_id,updated_at "
        "FROM game_classes ORDER BY sort_order,name"
    ))).mappings().all()
    return [_crow(r) for r in rows]


@router.post("/classes", response_model=ClassOut)
async def add_class(c: ClassIn, user: User = Depends(require_perm("chars")), db: AsyncSession = Depends(get_db)):
    row = (await db.execute(text(
        "INSERT INTO game_classes(name,summary,description,notes,sort_order,author,author_id) "
        "VALUES(:name,:summary,:description,:notes,:so,:author,:aid) "
        "RETURNING id,name,summary,description,notes,sort_order,author,author_id,updated_at"
    ), {"name": c.name, "summary": c.summary, "description": c.description, "notes": c.notes,
        "so": c.sort_order, "author": _author(user), "aid": user.id})).mappings().one()
    await db.commit()
    return _crow(row)


@router.post("/classes/{class_id}", response_model=ClassOut)
async def update_class(class_id: int, c: ClassIn, user: User = Depends(require_perm("chars")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_classes", class_id)
    row = (await db.execute(text(
        "UPDATE game_classes SET name=:name,summary=:summary,description=:description,notes=:notes,"
        "sort_order=:so,updated_at=now() WHERE id=:id "
        "RETURNING id,name,summary,description,notes,sort_order,author,author_id,updated_at"
    ), {"id": class_id, "name": c.name, "summary": c.summary, "description": c.description,
        "notes": c.notes, "so": c.sort_order})).mappings().one_or_none()
    if not row:
        raise HTTPException(404, "Sınıf yok")
    await db.commit()
    return _crow(row)


@router.post("/classes/{class_id}/delete")
async def delete_class(class_id: int, user: User = Depends(require_perm("chars")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_classes", class_id)
    res = await db.execute(text("DELETE FROM game_classes WHERE id=:id"), {"id": class_id})
    await db.commit()
    if res.rowcount == 0:
        raise HTTPException(404, "Sınıf yok")
    return {"deleted": class_id}


# ---------------- Skiller ----------------

class SkillIn(BaseModel):
    name: str = Field(min_length=1, max_length=80)
    max_level: int | None = Field(default=None, ge=0, le=1000)
    effect: str | None = Field(default=None, max_length=20000)
    description: str | None = Field(default=None, max_length=20000)
    class_id: int | None = None
    notes: str | None = Field(default=None, max_length=20000)
    sort_order: int = 0


class SkillOut(BaseModel):
    id: int
    name: str
    max_level: int | None
    effect: str | None
    description: str | None
    class_id: int | None
    class_name: str | None
    notes: str | None
    sort_order: int
    author: str | None
    author_id: int | None
    updated_at: str


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


async def _check_class(db: AsyncSession, class_id: int | None) -> None:
    if class_id is None:
        return
    ok = (await db.execute(text("SELECT 1 FROM game_classes WHERE id=:id"), {"id": class_id})).scalar()
    if not ok:
        raise HTTPException(400, "Sınıf bulunamadı")


@router.get("/skills", response_model=list[SkillOut])
async def list_skills(user: User = Depends(require_panel), db: AsyncSession = Depends(get_db)):
    rows = (await db.execute(text(
        "SELECT s.id,s.name,s.max_level,s.effect,s.description,s.class_id,c.name AS class_name,"
        "s.notes,s.sort_order,s.author,s.author_id,s.updated_at "
        "FROM game_skills s LEFT JOIN game_classes c ON c.id=s.class_id "
        "ORDER BY s.sort_order,s.name"
    ))).mappings().all()
    return [_srow(r) for r in rows]


@router.post("/skills", response_model=SkillOut)
async def add_skill(s: SkillIn, user: User = Depends(require_perm("chars")), db: AsyncSession = Depends(get_db)):
    await _check_class(db, s.class_id)
    sid = (await db.execute(text(
        "INSERT INTO game_skills(name,max_level,effect,description,class_id,notes,sort_order,author,author_id) "
        "VALUES(:name,:mx,:effect,:description,:cid,:notes,:so,:author,:aid) RETURNING id"
    ), {"name": s.name, "mx": s.max_level, "effect": s.effect, "description": s.description,
        "cid": s.class_id, "notes": s.notes, "so": s.sort_order,
        "author": _author(user), "aid": user.id})).scalar_one()
    await db.commit()
    return await _get_skill(db, sid)


@router.post("/skills/{skill_id}", response_model=SkillOut)
async def update_skill(skill_id: int, s: SkillIn, user: User = Depends(require_perm("chars")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_skills", skill_id)
    await _check_class(db, s.class_id)
    res = await db.execute(text(
        "UPDATE game_skills SET name=:name,max_level=:mx,effect=:effect,description=:description,"
        "class_id=:cid,notes=:notes,sort_order=:so,updated_at=now() WHERE id=:id"
    ), {"id": skill_id, "name": s.name, "mx": s.max_level, "effect": s.effect,
        "description": s.description, "cid": s.class_id, "notes": s.notes, "so": s.sort_order})
    if res.rowcount == 0:
        raise HTTPException(404, "Skill yok")
    await db.commit()
    return await _get_skill(db, skill_id)


@router.post("/skills/{skill_id}/delete")
async def delete_skill(skill_id: int, user: User = Depends(require_perm("chars")),
                       db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_skills", skill_id)
    res = await db.execute(text("DELETE FROM game_skills WHERE id=:id"), {"id": skill_id})
    await db.commit()
    if res.rowcount == 0:
        raise HTTPException(404, "Skill yok")
    return {"deleted": skill_id}


async def _get_skill(db: AsyncSession, skill_id: int) -> SkillOut:
    row = (await db.execute(text(
        "SELECT s.id,s.name,s.max_level,s.effect,s.description,s.class_id,c.name AS class_name,"
        "s.notes,s.sort_order,s.author,s.author_id,s.updated_at "
        "FROM game_skills s LEFT JOIN game_classes c ON c.id=s.class_id WHERE s.id=:id"
    ), {"id": skill_id})).mappings().one()
    return _srow(row)


# ---------------- Irklar ----------------

class RaceIn(BaseModel):
    name: str = Field(min_length=1, max_length=80)
    summary: str | None = Field(default=None, max_length=300)
    description: str | None = Field(default=None, max_length=20000)
    traits: str | None = Field(default=None, max_length=20000)
    notes: str | None = Field(default=None, max_length=20000)
    sort_order: int = 0


class RaceOut(BaseModel):
    id: int
    name: str
    summary: str | None
    description: str | None
    traits: str | None
    notes: str | None
    sort_order: int
    author: str | None
    author_id: int | None
    updated_at: str


def _rrow(r) -> RaceOut:
    d = dict(r)
    d["updated_at"] = d["updated_at"].isoformat()
    return RaceOut(**d)


_RACE_COLS = "id,name,summary,description,traits,notes,sort_order,author,author_id,updated_at"


@router.get("/races", response_model=list[RaceOut])
async def list_races(user: User = Depends(require_panel), db: AsyncSession = Depends(get_db)):
    rows = (await db.execute(text(
        f"SELECT {_RACE_COLS} FROM game_races ORDER BY sort_order,name"
    ))).mappings().all()
    return [_rrow(r) for r in rows]


@router.post("/races", response_model=RaceOut)
async def add_race(r: RaceIn, user: User = Depends(require_perm("chars")), db: AsyncSession = Depends(get_db)):
    row = (await db.execute(text(
        "INSERT INTO game_races(name,summary,description,traits,notes,sort_order,author,author_id) "
        "VALUES(:name,:summary,:description,:traits,:notes,:so,:author,:aid) "
        f"RETURNING {_RACE_COLS}"
    ), {"name": r.name, "summary": r.summary, "description": r.description, "traits": r.traits,
        "notes": r.notes, "so": r.sort_order, "author": _author(user), "aid": user.id})).mappings().one()
    await db.commit()
    return _rrow(row)


@router.post("/races/{race_id}", response_model=RaceOut)
async def update_race(race_id: int, r: RaceIn, user: User = Depends(require_perm("chars")),
                      db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_races", race_id)
    row = (await db.execute(text(
        "UPDATE game_races SET name=:name,summary=:summary,description=:description,traits=:traits,"
        "notes=:notes,sort_order=:so,updated_at=now() WHERE id=:id "
        f"RETURNING {_RACE_COLS}"
    ), {"id": race_id, "name": r.name, "summary": r.summary, "description": r.description,
        "traits": r.traits, "notes": r.notes, "so": r.sort_order})).mappings().one_or_none()
    if not row:
        raise HTTPException(404, "Irk yok")
    await db.commit()
    return _rrow(row)


@router.post("/races/{race_id}/delete")
async def delete_race(race_id: int, user: User = Depends(require_perm("chars")),
                      db: AsyncSession = Depends(get_db)):
    await _assert_owner_or_admin(db, user, "game_races", race_id)
    res = await db.execute(text("DELETE FROM game_races WHERE id=:id"), {"id": race_id})
    await db.commit()
    if res.rowcount == 0:
        raise HTTPException(404, "Irk yok")
    return {"deleted": race_id}