"""Comenzile slash ale puntii: declararea si inregistrarea lor in Discord.

Tot ce depinde de `discord.app_commands` sta aici. Logica ramane in `bot.Bridge`
(`cmd_new`, `cmd_cd`, ...), deci comenzile slash si allowlist-ul nu au a doua
implementare care sa divergheze.

Modulul se importa si FARA discord.py instalat (ca `bot.py`): atunci `build_tree`
returneaza None si `sync_guilds` nu face nimic.
"""

from __future__ import annotations

import logging

log = logging.getLogger("discord-bridge.slash")

try:  # pragma: no cover - depinde de mediu
    import discord  # type: ignore
    from discord import app_commands  # type: ignore
except ImportError:  # pragma: no cover
    discord = None  # type: ignore
    app_commands = None  # type: ignore

# Permisiunile din README (309237763136) + scope-ul de comenzi. Fara
# `applications.commands` in invitatie, sync-ul da 403 Missing Access.
INVITE_TEMPLATE = (
    "https://discord.com/oauth2/authorize?client_id={app_id}"
    "&scope=bot%20applications.commands&permissions=309237763136"
)


def invite_url(app_id) -> str:
    return INVITE_TEMPLATE.format(app_id=app_id or "APPLICATION_ID")


def build_tree(client, bridge):
    """Construieste arborele de comenzi. Fara discord.py: None."""
    if app_commands is None:  # pragma: no cover - mediu fara discord.py
        log.warning("discord.py lipseste: nu declar comenzi slash")
        return None

    tree = app_commands.CommandTree(client)

    @tree.command(name="new", description="Sesiune Claude noua in firul curent")
    @app_commands.describe(fork="Porneste noua sesiune din contextul celei curente")
    async def _new(interaction, fork: bool = False):
        await bridge.handle_slash(interaction, "new", fork=fork)

    @tree.command(name="cd", description="Schimba directorul de lucru al firului")
    @app_commands.describe(cale="Cale absoluta, oriunde in /workspace")
    async def _cd(interaction, cale: str):
        await bridge.handle_slash(interaction, "cd", cale=cale)

    @tree.command(name="model", description="Schimba modelul pentru firul curent")
    @app_commands.describe(model="sonnet (implicit) sau opus")
    @app_commands.choices(model=[
        app_commands.Choice(name="sonnet", value="sonnet"),
        app_commands.Choice(name="opus", value="opus"),
    ])
    async def _model(interaction, model: app_commands.Choice[str]):
        await bridge.handle_slash(interaction, "model", model=model.value)

    @tree.command(name="status", description="Sesiune, director, model, cost, proces")
    async def _status(interaction):
        await bridge.handle_slash(interaction, "status")

    @tree.command(name="stop", description="Opreste turul in desfasurare din firul curent")
    async def _stop(interaction):
        await bridge.handle_slash(interaction, "stop")

    @tree.command(name="cleanup", description="Procese lasate in urma (implicit: rulare seaca)")
    @app_commands.describe(force="Opreste efectiv procesele gasite (implicit: doar lista)")
    async def _cleanup(interaction, force: bool = False):
        await bridge.handle_slash(interaction, "cleanup", force=force)

    @tree.command(name="permisiuni", description="Ce s-a aprobat pentru tot firul")
    @app_commands.describe(revoca="Sterge aprobarile firului; totul cere iar confirmare")
    async def _permisiuni(interaction, revoca: bool = False):
        await bridge.handle_slash(interaction, "permisiuni", revoca=revoca)

    @tree.command(name="help", description="Lista comenzilor puntii")
    async def _help(interaction):
        await bridge.handle_slash(interaction, "help")

    return tree


async def sync_guilds(tree, guild_ids) -> dict[str, str]:
    """Inregistreaza comenzile pe fiecare guild din allowlist.

    Sync-ul pe guild e instantaneu; cel global se propaga in ~1h, deci nu-l folosim.
    NU arunca niciodata: daca invitatia botului nu are scope-ul `applications.commands`,
    Discord raspunde 403 Missing Access — logam linkul de reinvitare si mergem mai
    departe. Botul ramane functional pentru mesajele obisnuite.
    """
    results: dict[str, str] = {}
    if tree is None or discord is None:
        log.warning("fara arbore de comenzi: sar peste inregistrarea comenzilor slash")
        return results
    gids = [str(g).strip() for g in (guild_ids or []) if str(g).strip()]
    if not gids:
        log.warning("DISCORD_GUILD_IDS gol: nu inregistrez comenzi slash nicaieri")
        return results

    app_id = getattr(getattr(tree, "client", None), "application_id", None)
    for gid in gids:
        try:
            guild = discord.Object(id=int(gid))
            tree.copy_global_to(guild=guild)
            cmds = await tree.sync(guild=guild)
            results[gid] = f"ok ({len(cmds)} comenzi)"
            log.info("comenzi slash inregistrate pe guild %s: %d", gid, len(cmds))
        except Exception as exc:
            results[gid] = f"esuat: {exc}"
            log.error("sync de comenzi slash esuat pe guild %s: %s", gid, exc)
            log.error(
                "daca e 403 Missing Access, botul a fost invitat fara scope-ul "
                "`applications.commands`. Reinvita-l cu: %s",
                invite_url(app_id),
            )
    return results