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/**
* FarmEyes API Client
* ===================
* Handles all communication with the FastAPI backend.
* Provides clean async methods for detection, chat, and transcription.
*/
const FarmEyesAPI = {
// Base URL - auto-detect based on environment
baseUrl: window.location.origin,
// Current session ID
sessionId: null,
// Current language
language: 'en',
/**
* Initialize API client
*/
async init() {
// Try to get existing session from storage
this.sessionId = localStorage.getItem('farmeyes_session');
this.language = localStorage.getItem('farmeyes_language') || 'en';
// Create new session if none exists
if (!this.sessionId) {
await this.createSession(this.language);
}
console.log('[API] Initialized with session:', this.sessionId?.substring(0, 8));
return this;
},
/**
* Make an API request
* @param {string} endpoint - API endpoint
* @param {object} options - Fetch options
* @returns {Promise<object>} Response data
*/
async request(endpoint, options = {}) {
const url = `${this.baseUrl}${endpoint}`;
const defaultOptions = {
headers: {
'Accept': 'application/json',
},
};
// Merge options
const fetchOptions = { ...defaultOptions, ...options };
// Add Content-Type for JSON body
if (options.body && !(options.body instanceof FormData)) {
fetchOptions.headers['Content-Type'] = 'application/json';
fetchOptions.body = JSON.stringify(options.body);
}
try {
const response = await fetch(url, fetchOptions);
// Handle non-JSON responses
const contentType = response.headers.get('content-type');
if (!contentType || !contentType.includes('application/json')) {
if (!response.ok) {
throw new Error(`HTTP ${response.status}: ${response.statusText}`);
}
return { success: true };
}
const data = await response.json();
if (!response.ok) {
throw new Error(data.detail || data.error || `HTTP ${response.status}`);
}
return data;
} catch (error) {
console.error('[API] Request failed:', endpoint, error);
throw error;
}
},
// =========================================================================
// SESSION MANAGEMENT
// =========================================================================
/**
* Create a new session
* @param {string} language - Language code
* @returns {Promise<object>} Session data
*/
async createSession(language = 'en') {
const data = await this.request(`/api/session?language=${language}`);
if (data.success && data.session_id) {
this.sessionId = data.session_id;
this.language = language;
localStorage.setItem('farmeyes_session', this.sessionId);
localStorage.setItem('farmeyes_language', language);
console.log('[API] Session created:', this.sessionId.substring(0, 8));
}
return data;
},
/**
* Get session info
* @returns {Promise<object>} Session info
*/
async getSession() {
if (!this.sessionId) {
return { success: false, error: 'No session' };
}
return this.request(`/api/session/${this.sessionId}`);
},
/**
* Update session language
* @param {string} language - New language code
* @returns {Promise<object>} Updated session
*/
async setLanguage(language) {
if (!this.sessionId) {
await this.createSession(language);
return { success: true };
}
const data = await this.request(`/api/session/${this.sessionId}/language?language=${language}`, {
method: 'PUT'
});
if (data.success) {
this.language = language;
localStorage.setItem('farmeyes_language', language);
}
return data;
},
/**
* Clear current session and create new one
* @returns {Promise<object>} New session data
*/
async resetSession() {
if (this.sessionId) {
try {
await this.request(`/api/session/${this.sessionId}`, { method: 'DELETE' });
} catch (e) {
// Ignore errors on delete
}
}
localStorage.removeItem('farmeyes_session');
this.sessionId = null;
return this.createSession(this.language);
},
// =========================================================================
// DISEASE DETECTION
// =========================================================================
/**
* Analyze crop image for disease detection
* @param {File} imageFile - Image file to analyze
* @param {string} language - Language for results
* @returns {Promise<object>} Detection results
*/
async detectDisease(imageFile, language = null) {
const formData = new FormData();
formData.append('file', imageFile);
formData.append('language', language || this.language);
formData.append('session_id', this.sessionId || '');
const data = await this.request('/api/detect/', {
method: 'POST',
body: formData
});
// Update session ID if returned
if (data.session_id) {
this.sessionId = data.session_id;
localStorage.setItem('farmeyes_session', this.sessionId);
}
return data;
},
/**
* Analyze base64 encoded image
* @param {string} base64Image - Base64 encoded image
* @param {string} language - Language for results
* @returns {Promise<object>} Detection results
*/
async detectDiseaseBase64(base64Image, language = null) {
const data = await this.request('/api/detect/base64', {
method: 'POST',
body: {
image_base64: base64Image,
language: language || this.language,
session_id: this.sessionId
}
});
if (data.session_id) {
this.sessionId = data.session_id;
localStorage.setItem('farmeyes_session', this.sessionId);
}
return data;
},
/**
* Get detection service status
* @returns {Promise<object>} Service status
*/
async getDetectionStatus() {
return this.request('/api/detect/status');
},
/**
* Get supported disease classes
* @returns {Promise<object>} Classes info
*/
async getClasses() {
return this.request('/api/detect/classes');
},
/**
* Clear current diagnosis
* @returns {Promise<object>} Result
*/
async clearDiagnosis() {
if (!this.sessionId) {
return { success: false, error: 'No session' };
}
return this.request(`/api/detect/session/${this.sessionId}`, {
method: 'DELETE'
});
},
// =========================================================================
// CHAT
// =========================================================================
/**
* Send chat message
* @param {string} message - User message
* @param {string} language - Response language
* @returns {Promise<object>} Chat response
*/
async sendChatMessage(message, language = null) {
if (!this.sessionId) {
await this.createSession(language || this.language);
}
return this.request('/api/chat/', {
method: 'POST',
body: {
session_id: this.sessionId,
message: message,
language: language || this.language
}
});
},
/**
* Get welcome message for chat
* @param {string} language - Language code
* @returns {Promise<object>} Welcome message
*/
async getChatWelcome(language = null) {
if (!this.sessionId) {
return { success: false, error: 'No session' };
}
const lang = language || this.language;
return this.request(`/api/chat/welcome?session_id=${this.sessionId}&language=${lang}`);
},
/**
* Get chat history
* @param {number} limit - Max messages to return
* @returns {Promise<object>} Chat history
*/
async getChatHistory(limit = 50) {
if (!this.sessionId) {
return { success: false, messages: [] };
}
return this.request(`/api/chat/history?session_id=${this.sessionId}&limit=${limit}`);
},
/**
* Clear chat history
* @returns {Promise<object>} Result
*/
async clearChatHistory() {
if (!this.sessionId) {
return { success: false };
}
return this.request(`/api/chat/history?session_id=${this.sessionId}`, {
method: 'DELETE'
});
},
/**
* Get current diagnosis context
* @returns {Promise<object>} Diagnosis context
*/
async getChatContext() {
if (!this.sessionId) {
return { success: false };
}
return this.request(`/api/chat/context?session_id=${this.sessionId}`);
},
// =========================================================================
// VOICE TRANSCRIPTION
// =========================================================================
/**
* Transcribe audio file
* @param {File|Blob} audioFile - Audio file to transcribe
* @param {string} languageHint - Language hint
* @returns {Promise<object>} Transcription result
*/
async transcribeAudio(audioFile, languageHint = null) {
const formData = new FormData();
formData.append('file', audioFile, audioFile.name || 'audio.wav');
if (languageHint) {
formData.append('language_hint', languageHint);
}
return this.request('/api/transcribe/', {
method: 'POST',
body: formData
});
},
/**
* Transcribe base64 audio
* @param {string} base64Audio - Base64 encoded audio
* @param {string} filename - Original filename
* @param {string} languageHint - Language hint
* @returns {Promise<object>} Transcription result
*/
async transcribeBase64(base64Audio, filename = 'audio.wav', languageHint = null) {
return this.request('/api/transcribe/base64', {
method: 'POST',
body: {
audio_base64: base64Audio,
filename: filename,
language_hint: languageHint
}
});
},
/**
* Get transcription service status
* @returns {Promise<object>} Service status
*/
async getTranscriptionStatus() {
return this.request('/api/transcribe/status');
},
/**
* Pre-load Whisper model
* @returns {Promise<object>} Result
*/
async loadWhisperModel() {
return this.request('/api/transcribe/load-model', {
method: 'POST'
});
},
// =========================================================================
// UI TRANSLATIONS
// =========================================================================
/**
* Get UI translations
* @param {string} language - Language code
* @returns {Promise<object>} Translations
*/
async getTranslations(language = null) {
const lang = language || this.language;
return this.request(`/api/translations?language=${lang}`);
},
// =========================================================================
// HEALTH CHECK
// =========================================================================
/**
* Check API health
* @returns {Promise<object>} Health status
*/
async healthCheck() {
return this.request('/health');
},
/**
* Get API info
* @returns {Promise<object>} API information
*/
async getApiInfo() {
return this.request('/api');
}
};
// Export for use in other modules
window.FarmEyesAPI = FarmEyesAPI;
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