import { Label } from '@/components/ui/label';
import { Input } from '@/components/ui/input';
import { Switch } from '@/components/ui/switch';
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { Brain, Eye, EyeOff, Key } from 'lucide-react';
import { Button } from '@/components/ui/button';

interface AIProviderSettingsProps {
  aiEnabled: boolean;
  aiProvider: 'claude' | 'openai' | 'gemini';
  claudeApiKey: string;
  openaiApiKey: string;
  geminiApiKey: string;
  showApiKeys: Record<string, boolean>;
  onAiEnabledChange: (enabled: boolean) => void;
  onProviderChange: (provider: 'claude' | 'openai' | 'gemini') => void;
  onClaudeApiKeyChange: (key: string) => void;
  onOpenaiApiKeyChange: (key: string) => void;
  onGeminiApiKeyChange: (key: string) => void;
  onToggleApiKeyVisibility: (provider: 'claude' | 'openai' | 'gemini') => void;
  maskApiKey: (key: string) => string;
}

const PROVIDERS = [
  { value: 'claude', label: 'Claude (Anthropic)', description: 'Advanced AI by Anthropic' },
  { value: 'openai', label: 'OpenAI (GPT-4)', description: 'GPT-4 by OpenAI' },
  { value: 'gemini', label: 'Gemini (Google)', description: 'Gemini by Google' }
];

export function AIProviderSettings({
  aiEnabled,
  aiProvider,
  claudeApiKey,
  openaiApiKey,
  geminiApiKey,
  showApiKeys,
  onAiEnabledChange,
  onProviderChange,
  onClaudeApiKeyChange,
  onOpenaiApiKeyChange,
  onGeminiApiKeyChange,
  onToggleApiKeyVisibility,
  maskApiKey
}: AIProviderSettingsProps) {
  return (
    <Card className="border-0 shadow-sm">
      <CardHeader className="pb-3">
        <div className="flex items-center gap-2">
          <Brain className="w-5 h-5 text-re-green" />
          <CardTitle className="text-base font-semibold">AI Provider & API Keys</CardTitle>
        </div>
        <CardDescription className="text-sm">
          Select your AI provider and configure API keys
        </CardDescription>
      </CardHeader>
      <CardContent className="space-y-4">
        {/* Master Toggle */}
        <div className="flex items-center justify-between p-4 bg-gray-50 border border-gray-200 rounded-md">
          <div>
            <p className="font-medium text-sm">Enable AI Features</p>
            <p className="text-xs text-muted-foreground">
              Master toggle to enable/disable all AI-powered features
            </p>
          </div>
          <Switch
            checked={aiEnabled}
            onCheckedChange={onAiEnabledChange}
          />
        </div>

        {aiEnabled && (
          <>
            {/* Provider Selection */}
            <div className="space-y-2">
              <Label htmlFor="ai-provider" className="text-sm font-medium">
                AI Provider
              </Label>
              <Select value={aiProvider} onValueChange={(value: any) => onProviderChange(value)}>
                <SelectTrigger 
                  id="ai-provider"
                  className="border-gray-200 focus:border-re-green focus:ring-2 focus:ring-re-green/20"
                >
                  <SelectValue placeholder="Select AI provider" />
                </SelectTrigger>
                <SelectContent>
                  {PROVIDERS.map((provider) => (
                    <SelectItem key={provider.value} value={provider.value}>
                      <div className="flex items-center gap-2">
                        <span className="font-medium">{provider.label}</span>
                        <span className="text-xs text-muted-foreground">-</span>
                        <span className="text-xs text-muted-foreground">{provider.description}</span>
                      </div>
                    </SelectItem>
                  ))}
                </SelectContent>
              </Select>
            </div>

            {/* API Keys for each provider */}
            <div className="space-y-4 pt-2">
              <Label className="text-sm font-medium flex items-center gap-2">
                <Key className="w-4 h-4" />
                API Keys
              </Label>
              
              {/* Claude API Key */}
              <div className="space-y-2">
                <Label htmlFor="claude-key" className="text-xs text-muted-foreground">
                  Claude API Key
                </Label>
                <div className="flex gap-2">
                  <Input
                    id="claude-key"
                    type={showApiKeys.claude ? 'text' : 'password'}
                    value={claudeApiKey}
                    onChange={(e) => onClaudeApiKeyChange(e.target.value)}
                    placeholder={showApiKeys.claude ? "sk-ant-..." : maskApiKey(claudeApiKey) || "sk-ant-..."}
                    className="border-gray-200 focus:border-re-green focus:ring-2 focus:ring-re-green/20 font-mono text-sm"
                  />
                  <Button
                    type="button"
                    variant="outline"
                    size="icon"
                    onClick={() => onToggleApiKeyVisibility('claude')}
                    className="border-gray-200"
                  >
                    {showApiKeys.claude ? (
                      <EyeOff className="w-4 h-4" />
                    ) : (
                      <Eye className="w-4 h-4" />
                    )}
                  </Button>
                </div>
                <p className="text-xs text-muted-foreground">
                  Get your API key from console.anthropic.com
                </p>
              </div>

              {/* OpenAI API Key */}
              <div className="space-y-2">
                <Label htmlFor="openai-key" className="text-xs text-muted-foreground">
                  OpenAI API Key
                </Label>
                <div className="flex gap-2">
                  <Input
                    id="openai-key"
                    type={showApiKeys.openai ? 'text' : 'password'}
                    value={openaiApiKey}
                    onChange={(e) => onOpenaiApiKeyChange(e.target.value)}
                    placeholder={showApiKeys.openai ? "sk-..." : maskApiKey(openaiApiKey) || "sk-..."}
                    className="border-gray-200 focus:border-re-green focus:ring-2 focus:ring-re-green/20 font-mono text-sm"
                  />
                  <Button
                    type="button"
                    variant="outline"
                    size="icon"
                    onClick={() => onToggleApiKeyVisibility('openai')}
                    className="border-gray-200"
                  >
                    {showApiKeys.openai ? (
                      <EyeOff className="w-4 h-4" />
                    ) : (
                      <Eye className="w-4 h-4" />
                    )}
                  </Button>
                </div>
                <p className="text-xs text-muted-foreground">
                  Get your API key from platform.openai.com
                </p>
              </div>

              {/* Gemini API Key */}
              <div className="space-y-2">
                <Label htmlFor="gemini-key" className="text-xs text-muted-foreground">
                  Gemini API Key
                </Label>
                <div className="flex gap-2">
                  <Input
                    id="gemini-key"
                    type={showApiKeys.gemini ? 'text' : 'password'}
                    value={geminiApiKey}
                    onChange={(e) => onGeminiApiKeyChange(e.target.value)}
                    placeholder={showApiKeys.gemini ? "AIza..." : maskApiKey(geminiApiKey) || "AIza..."}
                    className="border-gray-200 focus:border-re-green focus:ring-2 focus:ring-re-green/20 font-mono text-sm"
                  />
                  <Button
                    type="button"
                    variant="outline"
                    size="icon"
                    onClick={() => onToggleApiKeyVisibility('gemini')}
                    className="border-gray-200"
                  >
                    {showApiKeys.gemini ? (
                      <EyeOff className="w-4 h-4" />
                    ) : (
                      <Eye className="w-4 h-4" />
                    )}
                  </Button>
                </div>
                <p className="text-xs text-muted-foreground">
                  Get your API key from ai.google.dev
                </p>
              </div>
            </div>
          </>
        )}
      </CardContent>
    </Card>
  );
}