"""Administrarea produselor finite (retetelor)."""
from __future__ import annotations

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

from ..repositories import (
    MAX_RECIPE_COMPONENTS,
    ValidationError,
    create_recipe,
    delete_recipe,
    get_recipe,
    list_components,
    list_recipes,
    list_templates,
    update_recipe,
)

bp = Blueprint("recipes", __name__, url_prefix="/retete")


def _slot_rows(source: dict | None) -> list[dict]:
    source = source or {}
    components = source.get("components") or []
    rows = []
    for slot in range(1, MAX_RECIPE_COMPONENTS + 1):
        existing = next((c for c in components if c.get("position") == slot), None)
        rows.append({
            "slot": slot,
            "component_id": existing.get("component_id") if existing else source.get(f"component_{slot}_id", ""),
            "target": existing.get("target_weight") if existing else source.get(f"component_{slot}_target", ""),
        })
    return rows


def _render(template, is_new: bool, recipe: dict | None = None):
    return render_template(
        template,
        recipe=recipe or {},
        is_new=is_new,
        components=list_components(),
        templates=list_templates(),
        slot_rows=_slot_rows(recipe),
    )


@bp.get("")
def index():
    return render_template("recipes/list.html", recipes=list_recipes(include_inactive=True))


@bp.route("/nou", methods=["GET", "POST"])
def create():
    if request.method == "POST":
        try:
            create_recipe(request.form)
            flash("Produsul finit a fost adaugat.", "success")
            return redirect(url_for("recipes.index"))
        except ValidationError as exc:
            flash(str(exc), "error")
    return _render("recipes/form.html", True, dict(request.form) if request.method == "POST" else {})


@bp.route("/<int:recipe_id>/editare", methods=["GET", "POST"])
def edit(recipe_id: int):
    recipe = get_recipe(recipe_id)
    if recipe is None:
        flash("Produsul finit nu exista.", "error")
        return redirect(url_for("recipes.index"))

    if request.method == "POST":
        try:
            update_recipe(recipe_id, request.form)
            flash("Produsul finit a fost actualizat.", "success")
            return redirect(url_for("recipes.index"))
        except ValidationError as exc:
            flash(str(exc), "error")
            recipe = {**recipe, **dict(request.form)}
    return _render("recipes/form.html", False, recipe)


@bp.post("/<int:recipe_id>/stergere")
def remove(recipe_id: int):
    delete_recipe(recipe_id)
    flash("Produsul finit a fost sters sau dezactivat (daca are pachete in istoric).", "success")
    return redirect(url_for("recipes.index"))