"""Analysis routes: trends + recommendations."""
from flask import Blueprint, request, g, jsonify

from auth import require_auth
from services import analysis as analysis_svc
from services import ai as ai_svc

bp = Blueprint("analysis", __name__)


@bp.route("/trends", methods=["GET"])
@require_auth
def trends():
    metric = request.args.get("metricType", "steps")
    s = request.args.get("startDate")
    e = request.args.get("endDate")
    return jsonify(analysis_svc.get_trends(metric, g.user_id, s, e))


@bp.route("/recommendations", methods=["GET"])
@require_auth
def recommendations():
    return jsonify(analysis_svc.get_recommendations(g.user_id))


@bp.route("/models", methods=["GET"])
@require_auth
def models():
    """Available LLMs and whether each one has credentials configured."""
    return jsonify(ai_svc.list_models())


@bp.route("/ai-recommendations", methods=["GET"])
@require_auth
def ai_recommendations():
    """LLM recommendations. `?model=` picks one; omit it to use the chain.

    Always 200: when no model succeeds the rule engine answers instead, and
    meta.source says which produced the result.
    """
    model = request.args.get("model") or None
    days = request.args.get("days", type=int)
    return jsonify(analysis_svc.get_ai_recommendations(g.user_id, model, days))