/** AgentsPanelContent — ADR-119 extracted from usePanelContent.tsx */
import React from 'react';
import { X, Search, Star, Loader2, Brain, Bot, Plus, MessageSquare } from 'lucide-react';
import { cn } from '@/shared/utils/cn';
import type { PanelContentDeps } from './PanelContentTypes';

export function AgentsPanelContent(d: PanelContentDeps) {
  return (
    <div className="flex flex-col h-full">
      <div className="px-2 py-1.5 border-b border-[var(--border-secondary)] flex items-center gap-1.5">
        <div className="flex-1 relative">
          <Search className="absolute left-2 top-1/2 -translate-y-1/2 w-3.5 h-3.5 text-[var(--text-tertiary)]" />
          <input type="text" value={d.agentsSearch}
            onChange={(e) => { d.setAgentsSearch(e.target.value); if (!e.target.value) d.setVectorSearchResults(null); }}
            placeholder="Поиск агентов..."
            className="w-full pl-7 pr-2 py-1.5 text-xs rounded-lg bg-[var(--bg-tertiary)] border border-[var(--border-secondary)] text-[var(--text-primary)] placeholder:text-[var(--text-tertiary)] focus:outline-none focus:ring-1 focus:ring-[var(--color-primary-500)]/50" />
          {d.agentsSearch && (
            <button onClick={() => { d.setAgentsSearch(''); d.setVectorSearchResults(null); }}
              className="absolute right-2 top-1/2 -translate-y-1/2 text-[var(--text-tertiary)] hover:text-[var(--text-primary)]">
              <X className="w-3 h-3" />
            </button>
          )}
        </div>
        <button onClick={() => d.setShowFavoriteAgents(!d.showFavoriteAgents)}
          className={cn("p-1.5 rounded-lg border transition-colors",
            d.showFavoriteAgents ? "bg-yellow-500/20 text-yellow-500 border-yellow-500/30" : "text-[var(--text-tertiary)] border-[var(--border-secondary)] hover:bg-[var(--bg-tertiary)] hover:text-[var(--text-primary)]"
          )} title={d.showFavoriteAgents ? "Показать всех" : "Только избранные"}>
          <Star className={cn("w-3.5 h-3.5", d.showFavoriteAgents && "fill-current")} />
        </button>
        <button onClick={d.handleVectorSearch} disabled={d.isVectorSearching || !d.agentsSearch}
          className={cn("p-1.5 rounded-lg border transition-colors",
            d.vectorSearchResults ? "bg-green-500/20 text-green-400 border-green-500/30" : "text-[var(--text-tertiary)] border-[var(--border-secondary)] hover:bg-purple-500/10 hover:text-purple-400 hover:border-purple-500/30",
            (!d.agentsSearch || d.isVectorSearching) && "opacity-50 cursor-not-allowed"
          )} title={d.vectorSearchResults ? "AI поиск активен" : "Семантический поиск"}>
          {d.isVectorSearching ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Brain className="w-3.5 h-3.5" />}
        </button>
      </div>
      <div className="flex-1 overflow-y-auto">
        {d.filteredAgents.length === 0 ? (
          d.agentsSearch ? (
            <div className="py-8 text-center text-sm text-[var(--text-tertiary)]">Не найдено</div>
          ) : d.isLoadingAgents ? (
            <div className="py-8 flex flex-col items-center gap-3">
              <Loader2 className="w-6 h-6 animate-spin text-[var(--color-primary-500)]" />
              <span className="text-sm text-[var(--text-tertiary)]">Загрузка агентов...</span>
            </div>
          ) : (
            <div className="p-6 text-center">
              <div className="w-14 h-14 rounded-full bg-gradient-to-br from-purple-500/20 to-primary-500/20 flex items-center justify-center mb-4 mx-auto">
                <Bot className="w-7 h-7 text-[var(--color-primary-500)]" />
              </div>
              <h3 className="font-medium text-[var(--text-primary)] mb-2">AI агенты не настроены</h3>
              <p className="text-sm text-[var(--text-tertiary)] mb-4">Создайте AI таблицы в System Data для работы с агентами</p>
              <button onClick={() => d.createTablesMutation.mutate()} disabled={d.createTablesMutation.isPending || !d.currentSpace?.id}
                className="px-4 py-2 bg-[var(--color-primary-500)] text-white rounded-lg hover:bg-[var(--color-primary-600)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors flex items-center gap-2 font-medium mx-auto">
                {d.createTablesMutation.isPending ? (<><Loader2 className="w-4 h-4 animate-spin" />Создание...</>) : (<><Plus className="w-4 h-4" />Создать AI таблицы</>)}
              </button>
              {d.createTablesMutation.isError && <p className="text-sm text-red-500 mt-2">Ошибка создания таблиц</p>}
            </div>
          )
        ) : (
          d.filteredAgents.map(agent => {
            const isFavorite = d.favoriteAgents.includes(agent.id);
            return (
              <div key={agent.id} className="border-b border-[var(--border-secondary)] last:border-b-0">
                <div className={cn("flex items-center gap-2 px-3 py-2 transition-colors group",
                  d.currentAgent?.id === agent.id ? "bg-[var(--color-primary-500)]/10" : "hover:bg-[var(--bg-tertiary)]")}>
                  <button onClick={(e) => { e.stopPropagation(); d.setFavoriteAgents(prev => isFavorite ? prev.filter(id => id !== agent.id) : [...prev, agent.id]); }}
                    className={cn("p-1 rounded border transition-colors",
                      isFavorite ? "text-yellow-500 border-yellow-500/30 bg-yellow-500/10" : "text-[var(--text-tertiary)] border-[var(--border-secondary)] hover:text-yellow-500 hover:border-yellow-500/30"
                    )} title={isFavorite ? "Убрать из избранного" : "В избранное"}>
                    <Star className={cn("w-3.5 h-3.5", isFavorite && "fill-current")} />
                  </button>
                  <button onClick={() => d.handleAgentSelect(agent)} className="flex items-center gap-2 flex-1 min-w-0 text-left">
                    <div className={cn("w-8 h-8 rounded-full flex items-center justify-center text-base flex-shrink-0",
                      d.currentAgent?.id === agent.id ? "bg-[var(--color-primary-500)]/20" : "bg-[var(--bg-tertiary)]")}>
                      {agent.icon || '\uD83E\uDD16'}
                    </div>
                    <div className="flex-1 min-w-0">
                      <div className="flex items-center gap-1.5">
                        <span className="text-sm font-medium text-[var(--text-primary)] truncate">{agent.name}</span>
                        {d.currentAgent?.id === agent.id && <span className="text-[9px] px-1 py-0.5 rounded bg-[var(--color-primary-500)]/30 text-[var(--color-primary-400)] flex-shrink-0">активен</span>}
                      </div>
                      {agent.description && <p className="text-[10px] text-[var(--text-tertiary)] truncate">{agent.description}</p>}
                    </div>
                  </button>
                  <div className="flex items-center gap-1">
                    <button onClick={(e) => { e.stopPropagation(); d.handleAgentSelect(agent); d.clearMessages(); d.setActivePanel('none'); }}
                      className="p-1.5 rounded border border-[var(--border-secondary)] text-[var(--text-tertiary)] hover:text-[var(--color-primary-500)] hover:border-[var(--color-primary-500)]/30 hover:bg-[var(--color-primary-500)]/10 transition-colors" title="Новый чат">
                      <MessageSquare className="w-3.5 h-3.5" />
                    </button>
                  </div>
                </div>
              </div>
            );
          })
        )}
      </div>
    </div>
  );
}