import { useEffect, useState } from "react";
import "./App.css";

import TopBar from "./components/TopBar";
import RecipeSearchList from "./components/RecipeSearchList";
import RecipeDetails from "./components/RecipeDetails";
import RecipeFormDrawer from "./components/RecipeFormDrawer";
import Modal from "./components/Modal";
import ToastContainer from "./components/ToastContainer";
import ThemeToggle from "./components/ThemeToggle";
import { getRecipes, getRandomRecipe, createRecipe, updateRecipe, deleteRecipe } from "./api";

function App() {
  const [recipes, setRecipes] = useState([]);
  const [selectedRecipe, setSelectedRecipe] = useState(null);

  // Recipe listing filters
  const [searchQuery, setSearchQuery] = useState("");
  const [filterMealType, setFilterMealType] = useState("");
  const [filterMaxTime, setFilterMaxTime] = useState("");
  const [filterTags, setFilterTags] = useState([]);
  const [filterMadeBy, setFilterMadeBy] = useState("");

  // Random recipe filters
  const [mealTypeFilter, setMealTypeFilter] = useState("");
  const [maxTimeFilter, setMaxTimeFilter] = useState("");
  const [ingredientsFilter, setIngredientsFilter] = useState("");

  const [loadingRandom, setLoadingRandom] = useState(false);
  const [error, setError] = useState("");

  const [drawerOpen, setDrawerOpen] = useState(false);
  const [editingRecipe, setEditingRecipe] = useState(null);

  const [deleteModal, setDeleteModal] = useState({ isOpen: false, recipeId: null, recipeName: "" });
  const [toasts, setToasts] = useState([]);
  const [theme, setTheme] = useState(() => {
    try {
      return localStorage.getItem("theme") || "dark";
    } catch {
      return "dark";
    }
  });

  useEffect(() => {
    loadRecipes();
  }, []);

  useEffect(() => {
    document.documentElement.setAttribute("data-theme", theme);
    try {
      localStorage.setItem("theme", theme);
    } catch {}
  }, [theme]);

  const loadRecipes = async () => {
    try {
      const list = await getRecipes();
      setRecipes(list);
      if (!selectedRecipe && list.length > 0) {
        setSelectedRecipe(list[0]);
      }
    } catch {
      setError("לא הצלחנו לטעון את רשימת המתכונים.");
    }
  };

  const getFilteredRecipes = () => {
    return recipes.filter((recipe) => {
      // Search by name
      if (searchQuery && !recipe.name.toLowerCase().includes(searchQuery.toLowerCase())) {
        return false;
      }

      // Filter by meal type
      if (filterMealType && recipe.meal_type !== filterMealType) {
        return false;
      }

      // Filter by prep time
      if (filterMaxTime) {
        const maxTime = parseInt(filterMaxTime, 10);
        if (recipe.time_minutes > maxTime) {
          return false;
        }
      }

      // Filter by tags
      if (filterTags.length > 0) {
        const recipeTags = recipe.tags || [];
        const hasAllTags = filterTags.every((tag) =>
          recipeTags.some((t) => t.toLowerCase() === tag.toLowerCase())
        );
        if (!hasAllTags) {
          return false;
        }
      }

      // Filter by made_by
      if (filterMadeBy && (!recipe.made_by || recipe.made_by !== filterMadeBy)) {
        return false;
      }

      return true;
    });
  };

  const handleRandomClick = async () => {
    setLoadingRandom(true);
    setError("");
    try {
      const ingredientsArr = ingredientsFilter
        .split(",")
        .map((s) => s.trim())
        .filter(Boolean);

      const recipe = await getRandomRecipe({
        mealType: mealTypeFilter || undefined,
        maxTime: maxTimeFilter ? Number(maxTimeFilter) : undefined,
        ingredients: ingredientsArr,
      });

      setSelectedRecipe(recipe);
    } catch (err) {
      if (err.response?.status === 404) {
        setError("לא נמצאו מתכונים שעומדים בפילטרים שלך.");
      } else {
        setError("אירעה שגיאה בחיפוש מתכון.");
      }
    } finally {
      setLoadingRandom(false);
    }
  };

  const handleCreateRecipe = async (payload) => {
    try {
      const created = await createRecipe(payload);
      setDrawerOpen(false);
      setEditingRecipe(null);
      await loadRecipes();
      setSelectedRecipe(created);
      addToast("המתכון החדש נוצר בהצלחה!", "success");
    } catch {
      setError("שגיאה בשמירת המתכון החדש.");
      addToast("שגיאה בשמירת המתכון החדש", "error");
    }
  };

  const handleEditRecipe = (recipe) => {
    setEditingRecipe(recipe);
    setDrawerOpen(true);
  };

  const handleUpdateRecipe = async (payload) => {
    try {
      await updateRecipe(editingRecipe.id, payload);
      setDrawerOpen(false);
      setEditingRecipe(null);
      await loadRecipes();
      const updated = (await getRecipes()).find((r) => r.id === editingRecipe.id);
      if (updated) {
        setSelectedRecipe(updated);
      }
      addToast("המתכון עודכן בהצלחה!", "success");
    } catch {
      setError("שגיאה בעדכון המתכון.");
      addToast("שגיאה בעדכון המתכון", "error");
    }
  };

  const handleShowDeleteModal = (recipeId, recipeName) => {
    setDeleteModal({ isOpen: true, recipeId, recipeName });
  };

  const handleConfirmDelete = async () => {
    const recipeId = deleteModal.recipeId;
    setDeleteModal({ isOpen: false, recipeId: null, recipeName: "" });

    try {
      await deleteRecipe(recipeId);
      await loadRecipes();
      setSelectedRecipe(null);
      addToast("המתכון נמחק בהצלחה!", "success");
    } catch {
      setError("שגיאה במחיקת המתכון.");
      addToast("שגיאה במחיקת המתכון", "error");
    }
  };

  const handleCancelDelete = () => {
    setDeleteModal({ isOpen: false, recipeId: null, recipeName: "" });
  };

  const addToast = (message, type = "info", duration = 3000) => {
    const id = Date.now();
    setToasts((prev) => [...prev, { id, message, type, duration }]);
  };

  const removeToast = (id) => {
    setToasts((prev) => prev.filter((toast) => toast.id !== id));
  };

  const handleFormSubmit = (payload) => {
    if (editingRecipe) {
      handleUpdateRecipe(payload);
    } else {
      handleCreateRecipe(payload);
    }
  };

  return (
    <div className="app-root">
      <ThemeToggle theme={theme} onToggleTheme={() => setTheme((t) => (t === "dark" ? "light" : "dark"))} hidden={drawerOpen} />
      <TopBar onAddClick={() => setDrawerOpen(true)} />

      <main className="layout">
        <section className="sidebar">
          <RecipeSearchList
            allRecipes={recipes}
            recipes={getFilteredRecipes()}
            selectedId={selectedRecipe?.id}
            onSelect={setSelectedRecipe}
            searchQuery={searchQuery}
            onSearchChange={setSearchQuery}
            filterMealType={filterMealType}
            onMealTypeChange={setFilterMealType}
            filterMaxTime={filterMaxTime}
            onMaxTimeChange={setFilterMaxTime}
            filterTags={filterTags}
            onTagsChange={setFilterTags}
            filterMadeBy={filterMadeBy}
            onMadeByChange={setFilterMadeBy}
          />
        </section>

        <section className="content">
          {error && <div className="error-banner">{error}</div>}

          {/* Random Recipe Suggester - Top Left */}
          <section className="panel filter-panel">
            <h3>חיפוש מתכון רנדומלי</h3>
            <div className="panel-grid">
              <div className="field">
                <label>סוג ארוחה</label>
                <select
                  value={mealTypeFilter}
                  onChange={(e) => setMealTypeFilter(e.target.value)}
                >
                  <option value="">לא משנה</option>
                  <option value="breakfast">בוקר</option>
                  <option value="lunch">צהריים</option>
                  <option value="dinner">ערב</option>
                  <option value="snack">נשנוש</option>
                </select>
              </div>

              <div className="field">
                <label>זמן מקסימלי (דקות)</label>
                <input
                  type="number"
                  min="1"
                  value={maxTimeFilter}
                  onChange={(e) => setMaxTimeFilter(e.target.value)}
                  placeholder="למשל 20"
                />
              </div>

              <div className="field field-full">
                <label>מצרכים שיש בבית (מופרד בפסיקים)</label>
                <input
                  value={ingredientsFilter}
                  onChange={(e) => setIngredientsFilter(e.target.value)}
                  placeholder="ביצה, עגבניה, פסטה..."
                />
              </div>
            </div>

            <button
              className="btn accent full"
              onClick={handleRandomClick}
              disabled={loadingRandom}
            >
              {loadingRandom ? "מחפש מתכון..." : "תן לי רעיון לארוחה 🎲"}
            </button>
          </section>

          {/* Recipe Details Card */}
          <RecipeDetails
            recipe={selectedRecipe}
            onEditClick={handleEditRecipe}
            onShowDeleteModal={handleShowDeleteModal}
          />
        </section>
      </main>

      <RecipeFormDrawer
        open={drawerOpen}
        onClose={() => {
          setDrawerOpen(false);
          setEditingRecipe(null);
        }}
        onSubmit={handleFormSubmit}
        editingRecipe={editingRecipe}
      />

      <Modal
        isOpen={deleteModal.isOpen}
        title="מחק מתכון"
        message={`בטוח שאתה רוצה למחוק את "${deleteModal.recipeName}"?`}
        confirmText="מחק"
        cancelText="ביטול"
        isDangerous={true}
        onConfirm={handleConfirmDelete}
        onCancel={handleCancelDelete}
      />

      <ToastContainer toasts={toasts} onRemove={removeToast} />
    </div>
  );
}

export default App;