from __future__ import annotations

from flask import Blueprint, abort, redirect, render_template, request, url_for

from app.services.notes_fs import create_note, list_notes, load_note_by_id, update_note_body

bp = Blueprint("notes", __name__, url_prefix="/notes")


@bp.get("/")
def notes_index():
    notes = list_notes()
    return render_template("notes/list.html", notes=notes)


@bp.get("/new")
def notes_new():
    return render_template("notes/new.html")


@bp.post("/")
def notes_create():
    title = (request.form.get("title") or "").strip()
    body = (request.form.get("body") or "").strip()
    tags_raw = (request.form.get("tags") or "").strip()
    tags = [t.strip() for t in tags_raw.split(",") if t.strip()] if tags_raw else []

    if not title:
        return render_template("notes/new.html", error="Title is required", title=title, body=body, tags_raw=tags_raw), 400

    note = create_note(title=title, body=body, tags=tags)
    return redirect(url_for("notes.notes_view", note_id=note.id))


@bp.get("/<note_id>")
def notes_view(note_id: str):
    note = load_note_by_id(note_id)
    if not note:
        abort(404)
    # M2 will render Markdown; for now show raw body and metadata
    return render_template("notes/view.html", note=note)


@bp.post("/<note_id>/body")
def notes_update_body(note_id: str):
    new_body = request.form.get("body") or ""
    note = update_note_body(note_id, new_body)
    if not note:
        abort(404)
    return redirect(url_for("notes.notes_view", note_id=note.id))