"""REST endpoints for AI coaching — matches frontend coaching.service.ts."""

import json
import logging
from odoo import http
from odoo.http import request, Response

_logger = logging.getLogger(__name__)


def _json_response(data, status=200):
    return Response(json.dumps(data, default=str), status=status, content_type="application/json")


def _get_json():
    try:
        return json.loads(request.httprequest.data or "{}")
    except Exception:
        return {}


class CoachController(http.Controller):
    """Handles /api/coach/* endpoints consumed by frontend AI coaching components."""

    def _get_coach(self):
        from odoo.addons.encoach_ai.services.coach_service import CoachService
        return CoachService(request.env)

    # ── POST /api/coach/chat — AiAssistantDrawer.tsx ──
    @http.route("/api/coach/chat", type="http", auth="user", methods=["POST"], csrf=False)
    def coach_chat(self, **kw):
        body = _get_json()
        try:
            coach = self._get_coach()
            result = coach.chat(
                body.get("message", ""),
                history=body.get("history", []),
                student_context=body.get("context"),
            )
            return _json_response(result)
        except Exception as e:
            _logger.exception("Coach chat failed")
            return _json_response({"reply": f"I'm having trouble right now. Error: {e}"})

    # ── GET /api/coach/tip — AiTipBanner.tsx ──
    @http.route("/api/coach/tip", type="http", auth="user", methods=["GET"], csrf=False)
    def coach_tip(self, **kw):
        context = request.params.get("context", "general")
        try:
            coach = self._get_coach()
            return _json_response(coach.get_tip(context))
        except Exception as e:
            return _json_response({"tip": "Keep practising every day — consistency beats intensity!", "category": "general"})

    # ── POST /api/coach/explain — AiGradeExplainer.tsx ──
    @http.route("/api/coach/explain", type="http", auth="user", methods=["POST"], csrf=False)
    def coach_explain(self, **kw):
        body = _get_json()
        try:
            coach = self._get_coach()
            result = coach.explain(
                body.get("score_data", {}),
                body.get("student_context", ""),
            )
            return _json_response(result)
        except Exception as e:
            return _json_response({"explanation": f"Could not generate explanation: {e}"})

    # ── POST /api/coach/suggest — AiStudyCoach.tsx ──
    @http.route("/api/coach/suggest", type="http", auth="user", methods=["POST"], csrf=False)
    def coach_suggest(self, **kw):
        body = _get_json()
        try:
            coach = self._get_coach()
            return _json_response(coach.suggest(body))
        except Exception as e:
            return _json_response({
                "suggestion": "Focus on your weakest skill for 30 minutes daily.",
                "focus_areas": ["writing", "speaking"],
                "daily_plan": [],
                "motivation": "Every expert was once a beginner!",
            })

    # ── POST /api/coach/writing-help — AiWritingHelper.tsx ──
    @http.route("/api/coach/writing-help", type="http", auth="user", methods=["POST"], csrf=False)
    def coach_writing_help(self, **kw):
        body = _get_json()
        try:
            coach = self._get_coach()
            result = coach.writing_help(
                body.get("task", ""),
                body.get("draft", ""),
                body.get("help_type", "improve"),
            )
            return _json_response(result)
        except Exception as e:
            return _json_response({"improved_text": "", "changes": [], "tips": [str(e)]})

    # ── POST /api/coach/hint — (unused component, wired for completeness) ──
    @http.route("/api/coach/hint", type="http", auth="user", methods=["POST"], csrf=False)
    def coach_hint(self, **kw):
        body = _get_json()
        try:
            coach = self._get_coach()
            return _json_response(coach.get_hint(body))
        except Exception as e:
            return _json_response({"hint": "Think about the key words in the question.", "strategy": "keyword_focus"})