import { useState, useEffect } from "react";
import placeholderLight from "../assets/placeholder-light.png";
import placeholderDark from "../assets/placeholder-dark.png";

function RecipeSearchList({
  allRecipes,
  recipes,
  selectedId,
  onSelect,
  searchQuery,
  onSearchChange,
  filterMealType,
  onMealTypeChange,
  filterMaxTime,
  onMaxTimeChange,
  filterTags,
  onTagsChange,
  filterOwner,
  onOwnerChange,
}) {
  const [expandFilters, setExpandFilters] = useState(false);
  const [theme, setTheme] = useState(document.documentElement.getAttribute('data-theme') || 'dark');
  
  useEffect(() => {
    const observer = new MutationObserver(() => {
      setTheme(document.documentElement.getAttribute('data-theme') || 'dark');
    });
    observer.observe(document.documentElement, { attributes: true, attributeFilter: ['data-theme'] });
    return () => observer.disconnect();
  }, []);
  
  const placeholderImage = theme === 'dark' ? placeholderDark : placeholderLight;

  // Extract unique tags from ALL recipes (not filtered)
  const allTags = Array.from(
    new Set(allRecipes.flatMap((recipe) => recipe.tags || []))
  ).sort();

  // Extract unique meal types from ALL recipes (not filtered)
  const mealTypes = Array.from(new Set(allRecipes.map((r) => r.meal_type))).sort();

  // Extract unique made_by values from ALL recipes
  // The made_by field is what the user defined when creating the recipe,
  // so we use it for both filtering and display
  const madeByMap = new Map();
  allRecipes.forEach((r) => {
    if (r.made_by) {
      // Always use made_by as the display name (it's the custom name the user entered)
      if (!madeByMap.has(r.made_by)) {
        madeByMap.set(r.made_by, r.made_by);
      }
    }
  });
  const allMadeBy = Array.from(madeByMap.keys()).sort();

  // Extract max time for slider from ALL recipes (not filtered) - add 10 to make it comfortable to select max time recipes
  const maxTimeInRecipes = Math.max(...allRecipes.map((r) => r.time_minutes), 0);
  const sliderMax = maxTimeInRecipes > 0 ? maxTimeInRecipes + 10 : 70;

  const handleTagToggle = (tag) => {
    if (filterTags.includes(tag)) {
      onTagsChange(filterTags.filter((t) => t !== tag));
    } else {
      onTagsChange([...filterTags, tag]);
    }
  };

  const clearAllFilters = () => {
    onSearchChange("");
    onMealTypeChange("");
    onMaxTimeChange("");
    onTagsChange([]);
    onOwnerChange("");
  };

  const hasActiveFilters = searchQuery || filterMealType || filterMaxTime || filterTags.length > 0 || filterOwner;

  return (
    <section className="panel secondary recipe-search-list">
      {/* Header with Search */}
      <div className="recipe-search-header">
        <div className="search-box-wrapper">
          <input
            type="text"
            className="search-box"
            placeholder="חיפוש לפי שם מתכון..."
            value={searchQuery}
            onChange={(e) => onSearchChange(e.target.value)}
          />
          {searchQuery && (
            <button
              className="search-clear"
              onClick={() => onSearchChange("")}
              title="נקה חיפוש"
            >
              ✕
            </button>
          )}
        </div>

        {/* Filter Toggle Button */}
        <button
          className="filter-toggle-btn"
          onClick={() => setExpandFilters(!expandFilters)}
          title={expandFilters ? "הסתר סינונים" : "הצג סינונים"}
        >
          <span className="filter-icon">☰</span>
          {hasActiveFilters && <span className="filter-badge">{Object.values([filterMealType, filterMaxTime, filterTags.length > 0 ? "tags" : null]).filter(Boolean).length}</span>}
        </button>
      </div>

      {/* Expandable Filters */}
      {expandFilters && (
        <div className="recipe-filters-expanded">
          <div className="filters-grid">
            {/* Meal Type Filter */}
            {mealTypes.length > 0 && (
              <div className="filter-group">
                <label className="filter-label">סוג ארוחה</label>
                <div className="filter-options">
                  <button
                    className={`filter-btn ${filterMealType === "" ? "active" : ""}`}
                    onClick={() => onMealTypeChange("")}
                  >
                    הכל
                  </button>
                  {mealTypes.map((type) => (
                    <button
                      key={type}
                      className={`filter-btn ${filterMealType === type ? "active" : ""}`}
                      onClick={() => onMealTypeChange(type)}
                    >
                      {translateMealType(type)}
                    </button>
                  ))}
                </div>
              </div>
            )}

            {/* Prep Time Filter */}
            {maxTimeInRecipes > 0 && (
              <div className="filter-group">
                <label className="filter-label">
                  זמן הכנה {filterMaxTime ? `עד ${filterMaxTime} דקות` : "הכל"}
                </label>
                <div className="time-filter-wrapper">
                  <input
                    type="range"
                    min="0"
                    max={sliderMax}
                    step="1"
                    value={filterMaxTime || 0}
                    onChange={(e) => {
                      const val = parseInt(e.target.value, 10);
                      onMaxTimeChange(val === 0 ? "" : String(val));
                    }}
                    className="time-slider"
                  />
                  <div className="time-labels">
                    <span>0</span>
                    <span>{sliderMax}</span>
                  </div>
                </div>
              </div>
            )}

            {/* Tags Filter */}
            {allTags.length > 0 && (
              <div className="filter-group">
                <label className="filter-label">תגיות</label>
                <div className="tag-filter-wrapper">
                  {allTags.map((tag) => (
                    <button
                      key={tag}
                      className={`tag-filter-btn ${filterTags.includes(tag) ? "active" : ""}`}
                      onClick={() => handleTagToggle(tag)}
                    >
                      {tag}
                    </button>
                  ))}
                </div>
              </div>
            )}

            {/* Made By Filter */}
            {allMadeBy.length > 0 && (
              <div className="filter-group">
                <label className="filter-label">המתכונים של:</label>
                <div className="filter-options">
                  <button
                    className={`filter-btn ${filterOwner === "" ? "active" : ""}`}
                    onClick={() => onOwnerChange("")}
                  >
                    הכל
                  </button>
                  {allMadeBy.map((madeBy) => (
                    <button
                      key={madeBy}
                      className={`filter-btn ${filterOwner === madeBy ? "active" : ""}`}
                      onClick={() => onOwnerChange(madeBy)}
                    >
                      {madeByMap.get(madeBy) || madeBy}
                    </button>
                  ))}
                </div>
              </div>
            )}
          </div>

          {/* Clear All Button */}
          {hasActiveFilters && (
            <button className="btn ghost full" onClick={clearAllFilters} style={{ marginTop: "0.6rem" }}>
              נקה הכל
            </button>
          )}
        </div>
      )}

      {/* Recipe List Header */}
      <div className="recipe-list-header">
        <h3>כל המתכונים</h3>
        <span className="badge">{recipes.length}</span>
      </div>

      {/* Recipe List */}
      {recipes.length === 0 ? (
        <p className="muted">עדיין אין מתכונים שתואמים את הסינונים שלך.</p>
      ) : (
        <ul className="recipe-list">
          {recipes.map((r) => (
            <li
              key={r.id}
              className={
                selectedId === r.id ? "recipe-list-item active" : "recipe-list-item"
              }
              onClick={() => onSelect(r)}
            >
              <div className="recipe-list-image">
                <img src={r.image || placeholderImage} alt={r.name} />
              </div>
              <div className="recipe-list-main">
                <div className="recipe-list-name">{r.name}</div>
                <div className="recipe-list-meta">
                  <span>{r.time_minutes} דק׳</span>
                  <span>{translateMealType(r.meal_type)}</span>
                </div>
              </div>
            </li>
          ))}
        </ul>
      )}
    </section>
  );
}

function translateMealType(type) {
  switch (type) {
    case "breakfast":
      return "בוקר";
    case "lunch":
      return "צהריים";
    case "dinner":
      return "ערב";
    case "snack":
      return "קינוחים";
    default:
      return type;
  }
}

export default RecipeSearchList;