import disnake
from disnake.ext import commands
from utils.forgejo_client import gitlab_client
from aiohttp import web
import logging
import json
import os
import asyncio
from typing import Dict, Any, Optional
from utils.premium import check_premium_tier

kuby_logger = logging.getLogger("KubyBot")
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
# ⚡ NOUVEAU: Utilise le même fichier que gitlab_integration.py
TRACKING_FILE = os.path.join(BASE_DIR, "commandes", "gitlab_issues.json")
LEGACY_REPORTS_FILE = os.path.join(BASE_DIR, "data", "gitlab_reports.json")


def classify_webhook_event(payload: Dict[str, Any]) -> Optional[str]:
    """Détermine si un webhook correspond à une issue ou à un commentaire."""
    object_kind = payload.get("object_kind")
    if object_kind in {"issue", "note"}:
        return object_kind

    action = str(payload.get("action") or payload.get("event") or "").lower()
    if action in {"comment_created", "comment_updated", "commented", "issue_comment_created", "issue_comment_updated"}:
        return "note"

    if "comment" in payload or payload.get("comment") or "comment" in action:
        return "note"

    if payload.get("issue") or payload.get("object_attributes") or action in {"open", "reopen", "close", "closed", "updated", "created", "edited", "label_updated", "label_added", "label_removed", "label_changed"}:
        return "issue"

    return None


def extract_issue_iid(payload: Dict[str, Any]) -> Optional[str]:
    """Extrait l’identifiant d’issue depuis plusieurs formats Forgejo/GitLab."""
    for container in (payload.get("object_attributes", {}), payload.get("issue", {}), payload.get("comment", {})):
        if not isinstance(container, dict):
            continue
        for key in ("iid", "number", "id"):
            value = container.get(key)
            if value not in (None, ""):
                return str(value)
    return None


def extract_issue_identifier(issue_payload: Optional[Dict[str, Any]]) -> Optional[str]:
    """Récupère un identifiant stable à stocker dans le tracking."""
    if not isinstance(issue_payload, dict):
        return None
    for key in ("iid", "number", "id"):
        value = issue_payload.get(key)
        if value not in (None, ""):
            return str(value)
    return None


def normalize_labels(labels: Any) -> list[str]:
    """Normalise une liste de labels provenant de Forgejo/GitLab."""
    if not labels:
        return []
    if isinstance(labels, str):
        return [labels]
    if isinstance(labels, list):
        normalized = []
        for item in labels:
            if isinstance(item, dict):
                name = item.get("name") or item.get("title") or item.get("label") or item.get("id")
            else:
                name = item
            if name is None:
                continue
            name = str(name).strip()
            if name and name not in normalized:
                normalized.append(name)
        return normalized
    return []


def extract_label_change(payload: Dict[str, Any]) -> Optional[Dict[str, Any]]:
    """Extrait le changement de labels d’un payload d’issue."""
    action = str(payload.get("action") or payload.get("event") or "").lower()
    if not action.startswith("label"):
        return None

    issue = payload.get("issue") or {}
    current_labels = normalize_labels(issue.get("labels") or payload.get("labels"))
    if not current_labels:
        return None

    label_payload = payload.get("label")
    label_name = None
    if isinstance(label_payload, dict):
        label_name = label_payload.get("name") or label_payload.get("title") or label_payload.get("label")
    elif isinstance(label_payload, str):
        label_name = label_payload

    previous_labels = []
    if isinstance(payload.get("changes"), dict):
        prev = payload["changes"].get("labels") or payload["changes"].get("label")
        if isinstance(prev, dict):
            previous_labels = normalize_labels(prev.get("previous"))

    if not previous_labels and issue.get("labels"):
        previous_labels = []

    if action in {"label_removed", "label_deleted"}:
        return {
            "previous": previous_labels or ([label_name] if label_name else []),
            "current": current_labels,
            "added": [],
            "removed": [label_name] if label_name else [],
        }

    added = [label for label in current_labels if label not in previous_labels]
    removed = [label for label in previous_labels if label not in current_labels]
    if not added and not removed and label_name:
        added = [label_name]

    return {
        "previous": previous_labels,
        "current": current_labels,
        "added": added,
        "removed": removed,
    }


def calculate_progress_from_labels(labels: list[str]) -> float:
    """Estime une progression visuelle à partir des labels présents."""
    if not labels:
        return 0.1

    normalized = [label.lower() for label in labels]
    if any(token in normalized for token in ["done", "resolved", "fixed", "closed", "terminé", "résolu", "ok", "completed"]):
        return 1.0
    if any(token in normalized for token in ["review", "ready", "qa", "testing", "test", "validated", "validation", "verif", "vérif"]):
        return 0.8
    if any(token in normalized for token in ["in progress", "working", "wip", "develop", "dev", "investigating", "progress", "travail"]):
        return 0.6
    if any(token in normalized for token in ["confirmed", "accepted", "triaged", "priority", "urgent", "prioritaire"]):
        return 0.4
    if any(token in normalized for token in ["bug", "enhancement", "feature", "manual", "new", "suggestion"]):
        return 0.2
    return 0.3


def build_status_message_from_labels(labels: list[str]) -> str:
    """Traduit les labels en un message utilisateur lisible."""
    if not labels:
        return "⏳ La demande évolue et l'équipe suit son avancement."

    normalized = [str(label).lower() for label in labels if str(label).strip()]
    if any(token in normalized for token in ["done", "resolved", "fixed", "closed", "terminé", "résolu", "completed", "ok"]):
        return "✅ La demande a été traitée et est prête à être déployée."
    if any(token in normalized for token in ["review", "qa", "testing", "test", "validated", "validation", "verif", "vérif"]):
        return "🔎 La demande est en cours de vérification par l'équipe."
    if any(token in normalized for token in ["in progress", "working", "wip", "develop", "dev", "investigating", "progress", "travail"]):
        return "🛠️ L'équipe est en train de travailler dessus."
    if any(token in normalized for token in ["confirmed", "accepted", "triaged", "priority", "urgent", "prioritaire"]):
        return "🗂️ La demande a bien été prise en compte et est en cours d'analyse."
    if any(token in normalized for token in ["bug", "enhancement", "feature", "manual", "new", "suggestion"]):
        return "📝 La demande a été reçue et sera étudiée prochainement."
    return "⏳ La demande évolue et l'équipe suit son avancement."


def build_progress_bar(progress: float, width: int = 18) -> str:
    """Construit une barre de progression stylée en Unicode."""
    progress = max(0.0, min(1.0, progress))
    filled = int(round(progress * width))
    filled = max(0, min(width, filled))
    empty = width - filled
    percent = int(progress * 100)
    return f"{'▰' * filled}{'▱' * empty} {percent}%"


def color_from_progress(progress: float) -> disnake.Color:
    """Retourne une couleur violet→bleu selon la progression."""
    progress = max(0.0, min(1.0, progress))
    purple = (117, 82, 255)
    blue = (74, 144, 255)
    r = int(purple[0] + (blue[0] - purple[0]) * progress)
    g = int(purple[1] + (blue[1] - purple[1]) * progress)
    b = int(purple[2] + (blue[2] - purple[2]) * progress)
    return disnake.Color.from_rgb(r, g, b)


def load_tracking():
    """Charge le tracking depuis gitlab_issues.json (avec migration automatique)"""
    tracking = {}
    if os.path.exists(TRACKING_FILE):
        try:
            with open(TRACKING_FILE, "r", encoding="utf-8") as f:
                tracking = json.load(f)
        except Exception as e:
            kuby_logger.error(f"Erreur chargement gitlab_issues.json: {e}")
    
    # Migration automatique depuis l'ancien fichier
    if os.path.exists(LEGACY_REPORTS_FILE):
        try:
            with open(LEGACY_REPORTS_FILE, "r", encoding="utf-8") as f:
                legacy_data = json.load(f)
            for issue_iid, user_id in legacy_data.items():
                if issue_iid not in tracking:
                    tracking[issue_iid] = {
                        "requester_id": user_id,
                        "last_note_id": 0,
                        "type": "legacy_report"
                    }
            kuby_logger.info(f"Migration automatique: {len(legacy_data)} issues fusionnées")
        except Exception as e:
            kuby_logger.error(f"Erreur migration gitlab_reports.json: {e}")
    
    return tracking


def save_tracking(data: Dict[str, Any]) -> None:
    """Sauvegarde dans gitlab_issues.json"""
    os.makedirs(os.path.dirname(TRACKING_FILE), exist_ok=True)
    temp_file = f"{TRACKING_FILE}.tmp"
    with open(temp_file, "w", encoding="utf-8") as f:
        json.dump(data, f, indent=2)
    os.replace(temp_file, TRACKING_FILE)


class BugReportModal(disnake.ui.Modal):
    def __init__(self, cog):
        self.cog = cog  # ⚡ NOUVEAU: Reçoit le cog pour tracking
        components = [
            disnake.ui.TextInput(
                label="Titre du bug",
                placeholder="Décrivez brièvement le problème...",
                custom_id="bug_title",
                required=True,
                max_length=100,
            ),
            disnake.ui.TextInput(
                label="Description détaillée",
                style=disnake.TextInputStyle.paragraph,
                placeholder="Que s'est-il passé ?",
                custom_id="bug_description",
                required=True,
                max_length=1000,
            ),
        ]
        super().__init__(
            title="Signaler un Bug",
            custom_id="bug_modal",
            components=components,
        )

    async def callback(self, interaction: disnake.ModalInteraction):
        await interaction.response.send_message("Envoi de votre rapport de bug à GitLab...", ephemeral=True)

        bug_title = (interaction.text_values.get("bug_title") or "").strip()
        if not bug_title:
            bug_title = "Sans titre"

        priority_name = "Normale"
        priority_value = "Normal"
        description_value = interaction.text_values.get("bug_description") or ""

        description_text = f"**Rapporté par:** {interaction.user} ({interaction.user.id})\n"
        description_text += f"**Priorité:** {priority_name}\n\n"
        description_text += f"**Description:**\n{description_value}"

        labels = ["bug", "manual-report", f"Priority::{priority_value}"]

        result = await gitlab_client.create_issue(
            title=f"[MANUAL] {bug_title}",
            description=description_text,
            labels=labels,
        )

        if result:
            issue_iid = extract_issue_identifier(result)
            if not issue_iid:
                kuby_logger.warning("Impossible de déterminer l’ID de l’issue créée depuis le retour Forgejo/GitLab")
                await interaction.edit_original_response(content="✅ Votre rapport a été envoyé, mais l’identifiant de l’issue n’a pas pu être récupéré automatiquement.")
                return

            self.cog.issue_data[issue_iid] = {
                "requester_id": interaction.user.id,
                "last_note_id": 0,
                "type": "manual-report"
            }
            save_tracking(self.cog.issue_data)
            await interaction.edit_original_response(
                content=(
                    "✅ Votre bug a été signalé avec succès ! "
                    "Nous avons bien été averti et le bug sera réglé dans la prochaine mise à jour. "
                    f"[Voir l'issue]({result.get('web_url') or result.get('html_url')})"
                )
            )
        else:
            await interaction.edit_original_response(
                content="❌ Une erreur est survenue lors de l'envoi du rapport à GitLab. Veuillez contacter un administrateur."
            )


class FeatureSuggestionModal(disnake.ui.Modal):
    def __init__(self, cog):
        self.cog = cog  # ⚡ NOUVEAU: Reçoit le cog pour tracking
        components = [
            disnake.ui.TextInput(
                label="Titre de la suggestion",
                placeholder="Que voulez-vous ajouter ?",
                custom_id="suggestion_title",
                required=True,
                max_length=100,
            ),
            disnake.ui.TextInput(
                label="Détails de la fonctionnalité",
                style=disnake.TextInputStyle.paragraph,
                placeholder="Décrivez comment cela devrait fonctionner...",
                custom_id="suggestion_description",
                required=True,
                max_length=1000,
            ),
        ]
        super().__init__(
            title="Suggérer une fonctionnalité",
            custom_id="suggestion_modal",
            components=components,
        )

    async def callback(self, interaction: disnake.ModalInteraction):
        await interaction.response.send_message("Envoi de votre suggestion à GitLab...", ephemeral=True)

        suggestion_title = (interaction.text_values.get("suggestion_title") or "").strip() or "Sans titre"
        description_value = interaction.text_values.get("suggestion_description") or ""

        description_text = f"**Sugéré par:** {interaction.user} ({interaction.user.id})\n\n"
        description_text += f"**Description:**\n{description_value}"

        labels = ["enhancement", "manual-suggestion"]

        result = await gitlab_client.create_issue(
            title=f"[SUGGESTION] {suggestion_title}",
            description=description_text,
            labels=labels,
        )

        if result:
            issue_iid = extract_issue_identifier(result)
            if not issue_iid:
                kuby_logger.warning("Impossible de déterminer l’ID de l’issue créée depuis le retour Forgejo/GitLab")
                await interaction.edit_original_response(content="✅ Votre suggestion a été envoyée, mais l’identifiant de l’issue n’a pas pu être récupéré automatiquement.")
                return

            self.cog.issue_data[issue_iid] = {
                "requester_id": interaction.user.id,
                "last_note_id": 0,
                "type": "manual-suggestion"
            }
            save_tracking(self.cog.issue_data)
            await interaction.edit_original_response(
                content=(
                    "✅ Votre suggestion a été envoyée avec succès ! "
                    "Merci de contribuer à l'amélioration du bot. "
                    f"[Voir l'issue]({result.get('web_url') or result.get('html_url')})"
                )
            )
        else:
            await interaction.edit_original_response(
                content="❌ Une erreur est survenue lors de l'envoi de la suggestion à GitLab."
            )


class BugReportView(disnake.ui.View):
    def __init__(self, cog):
        self.cog = cog  # ⚡ NOUVEAU: Reçoit le cog
        super().__init__(timeout=None)

    @disnake.ui.button(label="🎫 Remplir le formulaire", style=disnake.ButtonStyle.primary, custom_id="open_bug_form")
    async def open_bug_form(self, button: disnake.ui.Button, interaction: disnake.MessageInteraction):
        modal = BugReportModal(self.cog)
        await interaction.response.send_modal(modal)


class FeatureSuggestionView(disnake.ui.View):
    def __init__(self, cog):
        self.cog = cog  # ⚡ NOUVEAU: Reçoit le cog
        super().__init__(timeout=None)

    @disnake.ui.button(label="🎫 Remplir le formulaire", style=disnake.ButtonStyle.green, custom_id="open_suggestion_form")
    async def open_suggestion_form(self, button: disnake.ui.Button, interaction: disnake.MessageInteraction):
        modal = FeatureSuggestionModal(self.cog)
        await interaction.response.send_modal(modal)


class BugReport(commands.Cog):
    def __init__(self, bot):
        self.bot = bot
        self.issue_data = load_tracking()  # ⚡ NOUVEAU: Charge le tracking unifié

    async def cog_load(self):
        kuby_logger.info("BugReport cog chargé. Démarrage du serveur de relais interne (port 5001)...")
        REPORTS_DIR = os.path.dirname(LEGACY_REPORTS_FILE)
        os.makedirs(REPORTS_DIR, exist_ok=True)
        await self._start_webhook_server()

        # ⚡ Enregistrement des vues persistantes (boutons panel)
        # Sans ça, après un redémarrage les boutons "Remplir le formulaire"
        # dans les anciens messages de panel ne fonctionnent plus.
        self.bot.add_view(BugReportView(self))
        self.bot.add_view(FeatureSuggestionView(self))
        kuby_logger.info("✅ Vues persistantes BugReport enregistrées (open_bug_form, open_suggestion_form)")

    async def _start_webhook_server(self):
        try:
            app = web.Application()
            app.router.add_post('/bot_event', self.handle_bot_event)
            app.router.add_post('/deployment_complete', self.handle_deployment_complete)
            self.runner = web.AppRunner(app)
            await self.runner.setup()
            self.site = web.TCPSite(self.runner, '127.0.0.1', 5001, reuse_address=True)
            await self.site.start()
            kuby_logger.info("Internal Bot Webhook Server started on 127.0.0.1:5001")
        except Exception as e:
            kuby_logger.error(f"Failed to start Internal Bot Webhook Server: {e}")

    def cog_unload(self):
        if hasattr(self, 'runner'):
            async def cleanup():
                try:
                    if hasattr(self, 'site'):
                        await self.site.stop()
                    await self.runner.cleanup()
                    kuby_logger.info("Internal Bot Webhook Server stopped and cleaned up.")
                except Exception as e:
                    kuby_logger.error(f"Error during webhook server cleanup: {e}")
            self.bot.loop.create_task(cleanup())

    async def handle_deployment_complete(self, request):
        """Notifie les demandeurs dont la fonctionnalité a été intégrée et attend le prochain déploiement."""
        try:
            await request.json()
            for issue_iid, issue_data in list(self.issue_data.items()):
                if not issue_data.get("pending_deployment_notification"):
                    continue

                requester_id = issue_data.get("requester_id")
                if not requester_id:
                    continue

                user = self.bot.get_user(requester_id)
                if not user:
                    try:
                        user = await self.bot.fetch_user(requester_id)
                    except Exception:
                        continue

                try:
                    embed = disnake.Embed(
                        title="🚀 Fonctionnalité disponible !",
                        description=(
                            "✅ Votre demande est désormais fonctionnelle sur le bot.\n\n"
                            "Merci encore pour votre contribution et votre patience."
                        ),
                        color=disnake.Color.blurple()
                    )
                    if self.bot.user.display_avatar:
                        embed.set_thumbnail(url=self.bot.user.display_avatar.url)
                    await user.send(embed=embed)
                except Exception as e:
                    kuby_logger.warning(f"Impossible d'envoyer la notification de déploiement à {user}: {e}")

                issue_data["pending_deployment_notification"] = False

            save_tracking(self.issue_data)
            return web.json_response({"status": "notified"}, status=200)
        except Exception as e:
            kuby_logger.error(f"Error handling deployment complete: {e}")
            return web.json_response({"status": "error", "message": str(e)}, status=500)

    async def handle_bot_event(self, request):
        """Gère les webhooks (adapté pour GitLab ET Forgejo)"""
        try:
            if not self.bot.is_ready():
                kuby_logger.info("Webhook received but bot is not ready yet. Waiting up to 10s...")
                try:
                    await asyncio.wait_for(self.bot.wait_until_ready(), timeout=10.0)
                except asyncio.TimeoutError:
                    kuby_logger.warning("Bot still not ready after 10s. Proceeding anyway.")

            payload = await request.json()
            event_type = classify_webhook_event(payload)

            if event_type not in ["issue", "note"]:
                kuby_logger.info(
                    "Webhook ignoré : type d’événement non reconnu (keys=%s action=%s object_kind=%s)",
                    list(payload.keys()),
                    payload.get("action") or payload.get("event"),
                    payload.get("object_kind"),
                )
                return web.json_response({"status": "ignored"}, status=200)

            # Récupère l'IID de l'issue
            issue_iid = extract_issue_iid(payload)

            if not issue_iid:
                kuby_logger.warning("Webhook ignoré : aucun identifiant d’issue trouvé dans le payload")
                return web.json_response({"status": "no issue id"}, status=200)
            
            issue_data = self.issue_data.get(issue_iid)
            if not issue_data:
                return web.json_response({"status": "untracked issue"}, status=200)
            
            user_id = issue_data.get("requester_id")
            if not user_id:
                return web.json_response({"status": "no requester"}, status=200)
            
            user = self.bot.get_user(user_id)
            if not user:
                try:
                    user = await self.bot.fetch_user(user_id)
                except:
                    return web.json_response({"status": "user not found"}, status=200)
            
            # 🕵️ 3. RÉCUPÉRATION DU TITRE
            issue_title = (
                payload.get("object_attributes", {}).get("title") or
                payload.get("issue", {}).get("title") or
                payload.get("issue", {}).get("name") or
                f"#{issue_iid}"
            )

            if event_type == "note":
                # ⚡ NOUVEAU: Notifie les commentaires via le webhook (instantané)
                comment_payload = payload.get("comment")
                if isinstance(comment_payload, dict):
                    note_body = comment_payload.get("body") or comment_payload.get("content") or ""
                    author_name = (
                        payload.get("sender", {}).get("username")
                        or payload.get("sender", {}).get("login")
                        or payload.get("user", {}).get("name")
                        or "Développeur"
                    )
                    is_system = False
                else:
                    note_attr = payload.get("object_attributes", {})
                    is_system = note_attr.get("system", False)
                    note_body = (
                        note_attr.get("note") or
                        note_attr.get("body") or
                        payload.get("note", "") or ""
                    )
                    author_name = payload.get("user", {}).get("name", "Développeur")

                if not is_system and note_body:
                    try:
                        embed = disnake.Embed(
                            title="💬 Nouveau commentaire sur votre signalement",
                            description=f"Le développeur a répondu à votre rapport **{issue_title}** :\n\n>>> {note_body}\n\n✍️ **Par :** {author_name}",
                            color=disnake.Color.orange()
                        )
                        embed.set_thumbnail(url=self.bot.user.display_avatar.url)
                        await user.send(embed=embed)
                        kuby_logger.info(f"Commentaire envoyé à {user} pour l'issue #{issue_iid}")
                    except (disnake.Forbidden, disnake.HTTPException) as e:
                            kuby_logger.warning(f"Impossible d'envoyer le DM à {user}: {e}")
                            if dev and dev.id != user.id:
                                try:
                                    await dev.send(f"⚠️ [DM BLOQUÉ] Impossible d'envoyer le commentaire à {user} pour l'issue #{issue_iid}")
                                except:
                                    pass
            
            elif event_type == "issue":
                action = payload.get("object_attributes", {}).get("action") or payload.get("action")
                state = payload.get("object_attributes", {}).get("state") or payload.get("issue", {}).get("state")
                label_change = extract_label_change(payload)

                if label_change:
                    current_labels = label_change["current"]
                    progress = calculate_progress_from_labels(current_labels)
                    bar = build_progress_bar(progress)
                    status_message = build_status_message_from_labels(current_labels)
                    try:
                        embed = disnake.Embed(
                            title="📈 Évolution du ticket",
                            description=f"Le suivi de **{issue_title}** a été mis à jour.\n\n{status_message}",
                            color=color_from_progress(progress),
                        )
                        embed.add_field(name="Progression", value=bar, inline=False)
                        embed.set_thumbnail(url=self.bot.user.display_avatar.url)
                        await user.send(embed=embed)
                        kuby_logger.info(f"Notification de progression envoyée à {user} pour l'issue #{issue_iid}")
                    except Exception as e:
                        kuby_logger.error(f"Erreur notification progression: {e}")

                is_closing_now = action in ["close", "closed"] or state == "closed"
                if is_closing_now:
                    self.issue_data[issue_iid]["pending_deployment_notification"] = True
                    save_tracking(self.issue_data)
                    try:
                        embed = disnake.Embed(
                            title="🛠️ Demande traitée !",
                            description=(
                                f"Bonne nouvelle ! Votre demande **{issue_title}** a été intégrée au code du bot.\n\n"
                                "✅ Elle n'est pas encore disponible au public, mais elle est maintenant prise en charge côté développement.\n\n"
                                "🔜 Lors du prochain déploiement, Kuby vous informera qu'elle est désormais fonctionnelle."
                            ),
                            color=disnake.Color.green()
                        )
                        if self.bot.user.display_avatar:
                            embed.set_thumbnail(url=self.bot.user.display_avatar.url)
                        await user.send(embed=embed)
                    except Exception as e:
                        kuby_logger.error(f"Erreur notification clôture: {e}")

            return web.json_response({"status": "success"}, status=200)

        except Exception as e:
            kuby_logger.error(f"Error handling bot event: {e}")
            return web.json_response({"status": "error", "message": str(e)}, status=500)

    @commands.slash_command(name="signaler_bug", description="Signaler un bug aux développeurs")
    @check_premium_tier()
    async def signifier_bug(self, interaction: disnake.ApplicationCommandInteraction):
        modal = BugReportModal(self)
        await interaction.response.send_modal(modal)

    @commands.slash_command(name="suggerer_fonctionnalite", description="Proposer une nouvelle fonctionnalité")
    @check_premium_tier()
    async def suggerer_fonctionnalite(self, interaction: disnake.ApplicationCommandInteraction):
        modal = FeatureSuggestionModal(self)
        await interaction.response.send_modal(modal)


def setup(bot):
    bot.add_cog(BugReport(bot))