Implement voice assignment component (Task 10)
- Created VoiceAssignmentSection component with role-to-voice mapping - Added language selector with American English, British English, French, Japanese - Added speed slider (0.5x - 1.5x range) - Implemented Generate Audiobook button with proper disabled state - Integrated component into App.tsx with state management - Added role detection API call on text submission - Validates all roles have assigned voices before enabling generation Requirements: 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.1, 4.2, 4.3, 4.4, 5.1, 5.2, 5.3
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165
frontend/src/components/VoiceAssignmentSection.tsx
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165
frontend/src/components/VoiceAssignmentSection.tsx
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import type { Role } from '../api/tts';
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interface VoiceAssignmentSectionProps {
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roles: Role[];
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voiceAssignments: Map<string, string>;
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onVoiceChange: (roleId: string, voiceId: string) => void;
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language: string;
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onLanguageChange: (lang: string) => void;
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speed: number;
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onSpeedChange: (speed: number) => void;
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onGenerate: () => void;
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isGenerating: boolean;
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allRolesAssigned: boolean;
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}
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interface VoiceOption {
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id: string;
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label: string;
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gender: 'male' | 'female';
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accent: string;
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}
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interface LanguageOption {
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code: string;
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label: string;
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}
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// Kokoro voice options as defined in the design document
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const KOKORO_VOICES: VoiceOption[] = [
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{ id: 'af_bella', label: 'Bella (Female, American)', gender: 'female', accent: 'American' },
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{ id: 'af_sarah', label: 'Sarah (Female, American)', gender: 'female', accent: 'American' },
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{ id: 'am_adam', label: 'Adam (Male, American)', gender: 'male', accent: 'American' },
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{ id: 'am_michael', label: 'Michael (Male, American)', gender: 'male', accent: 'American' },
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{ id: 'bf_emma', label: 'Emma (Female, British)', gender: 'female', accent: 'British' },
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{ id: 'bf_isabella', label: 'Isabella (Female, British)', gender: 'female', accent: 'British' },
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{ id: 'bm_george', label: 'George (Male, British)', gender: 'male', accent: 'British' },
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{ id: 'bm_lewis', label: 'Lewis (Male, British)', gender: 'male', accent: 'British' },
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];
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// Language options as defined in the design document
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const LANGUAGES: LanguageOption[] = [
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{ code: 'a', label: 'American English' },
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{ code: 'b', label: 'British English' },
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{ code: 'f', label: 'French' },
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{ code: 'j', label: 'Japanese' },
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];
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export default function VoiceAssignmentSection({
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roles,
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voiceAssignments,
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onVoiceChange,
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language,
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onLanguageChange,
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speed,
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onSpeedChange,
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onGenerate,
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isGenerating,
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allRolesAssigned,
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}: VoiceAssignmentSectionProps) {
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const handleVoiceSelect = (roleId: string, voiceId: string) => {
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onVoiceChange(roleId, voiceId);
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};
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const handleLanguageSelect = (e: React.ChangeEvent<HTMLSelectElement>) => {
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onLanguageChange(e.target.value);
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};
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const handleSpeedChange = (e: React.ChangeEvent<HTMLInputElement>) => {
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const newSpeed = parseFloat(e.target.value);
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onSpeedChange(newSpeed);
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};
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const isGenerateDisabled = !allRolesAssigned || isGenerating;
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return (
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<div className="w-full max-w-4xl mx-auto p-6">
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<h2 className="text-2xl font-bold mb-6">Assign voices to roles</h2>
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{/* Role-to-Voice Mapping Section */}
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<div className="mb-8">
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<h3 className="text-xl font-semibold mb-4">Voice Assignments</h3>
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<div className="space-y-4">
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{roles.map((role) => (
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<div key={role.id} className="flex items-center gap-4">
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<label className="w-40 font-medium text-gray-700">
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{role.label}:
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</label>
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<select
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value={voiceAssignments.get(role.id) || ''}
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onChange={(e) => handleVoiceSelect(role.id, e.target.value)}
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className="flex-1 p-2 border-2 border-gray-300 rounded-lg focus:border-blue-500 focus:outline-none"
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>
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<option value="">Select a voice...</option>
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{KOKORO_VOICES.map((voice) => (
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<option key={voice.id} value={voice.id}>
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{voice.label}
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</option>
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))}
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</select>
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</div>
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))}
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</div>
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</div>
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{/* Language Selector */}
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<div className="mb-6">
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<h3 className="text-xl font-semibold mb-4">Language</h3>
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<select
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value={language}
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onChange={handleLanguageSelect}
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className="w-full p-2 border-2 border-gray-300 rounded-lg focus:border-blue-500 focus:outline-none"
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>
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{LANGUAGES.map((lang) => (
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<option key={lang.code} value={lang.code}>
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{lang.label}
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</option>
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))}
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</select>
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</div>
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{/* Speed Slider */}
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<div className="mb-8">
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<h3 className="text-xl font-semibold mb-4">Playback Speed</h3>
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<div className="flex items-center gap-4">
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<span className="text-sm text-gray-600 w-12">0.5x</span>
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<input
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type="range"
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min="0.5"
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max="1.5"
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step="0.1"
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value={speed}
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onChange={handleSpeedChange}
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className="flex-1"
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/>
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<span className="text-sm text-gray-600 w-12">1.5x</span>
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<span className="font-semibold text-gray-800 w-16 text-center">
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{speed.toFixed(1)}x
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</span>
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</div>
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</div>
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{/* Generate Button */}
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<div className="flex justify-center">
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<button
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onClick={onGenerate}
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disabled={isGenerateDisabled}
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className={`px-8 py-3 rounded-lg font-semibold text-white transition-colors ${
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isGenerateDisabled
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? 'bg-gray-400 cursor-not-allowed'
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: 'bg-green-600 hover:bg-green-700 cursor-pointer'
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}`}
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>
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{isGenerating ? 'Generating...' : 'Generate Audiobook'}
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</button>
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</div>
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{/* Validation Message */}
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{!allRolesAssigned && !isGenerating && (
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<div className="mt-4 p-3 bg-yellow-100 border border-yellow-400 text-yellow-800 rounded text-center">
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Please assign voices to all roles before generating the audiobook.
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</div>
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)}
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</div>
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);
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}
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