// services/api-service.js - All API interactions

import { Utils } from '../utils.js';
import { StateManager } from './state-manager.js';

export const ApiService = {
  /**
   * Send a chat message to the server
   * @param {string} text - User message text
   * @param {string} modelType - Model type to use
   * @returns {Promise<Object>} Response data
   */
  async sendChatMessage(text, modelType) {
    const payload = {
      user_id: Utils.getMachineId(),
      session_id: StateManager.sessionId,
      conversation_id: StateManager.getConversationId(modelType),
      human_message: text,
      model_type: modelType,
      consent: StateManager.consentGranted,
      age_group: StateManager.profile.ageGroup,
      gender: StateManager.profile.gender,
      roles: StateManager.profile.roles,
      participant_id: StateManager.profile.participantId,
      lang: StateManager.currentLang
    };

    const res = await fetch('/chat', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload),
    });

    if (!res.ok) {
      throw new Error(`HTTP ${res.status}`);
    }

    return res;
  },

  /**
   * Upload a file to the server
   * @param {File} file - File to upload
   * @returns {Promise<boolean>} Success status
   */
  async uploadFile(file) {
    const formData = new FormData();
    formData.append('file', file);
    formData.append('session_id', StateManager.sessionId);

    try {
      const res = await fetch('/file', {
        method: 'PUT',
        body: formData,
      });

      if (!res.ok) {
        if (res.status === 413) {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_file_too_large"], 'error');
        } else if (res.status === 400) {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_malformed_file"], 'error');
        } else if (res.status === 415) {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_unsupported_mime_type"], 'error');
        } else if (res.status === 419) {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_exceed_session_size"], 'error');
        } else if (res.status === 500) {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_server_error"], 'error');
        } else {
          showSnackbar(translations[StateManager.currentLang]["file_upload_failed_unknown_error"], 'error');
        }
        return false;
      }

      showSnackbar(translations[StateManager.currentLang]["file_upload_success"], 'success');
      return true;
    } catch (err) {
      showSnackbar(translations[StateManager.currentLang]["file_upload_failed_network_error"], 'error');
      return false;
    }
  },

  /**
   * Delete a file from the server
   * @param {File} file - File to delete
   * @returns {Promise<boolean>} Success status
   */
  async deleteFile(file) {
    const payload = {
      file_name: file.name,
      user_id: Utils.getMachineId(),
      session_id: StateManager.sessionId,
      consent: StateManager.consentGranted,
      age_group: StateManager.profile.ageGroup,
      gender: StateManager.profile.gender,
      roles: StateManager.profile.roles,
      participant_id: StateManager.profile.participantId
    };

    try {
      const res = await fetch('/file', {
        method: 'DELETE',
        body: JSON.stringify(payload),
        headers: { 'Content-Type': 'application/json' },
      });

      if (!res.ok) {
        showSnackbar(translations[StateManager.currentLang]["file_upload_failed_server_error"], 'error');
        return false;
      }

      showSnackbar(translations[StateManager.currentLang]["file_delete_success"], 'success');
      return true;
    } catch (err) {
      showSnackbar(translations[StateManager.currentLang]["file_delete_failed_network_error"], 'error');
      return false;
    }
  },

  /**
   * Send a comment to the server
   * @param {string} comment - Comment text
   * @returns {Promise<Object>} Response object with status
   */
  async sendComment(comment) {
    const payload = {
      user_id: Utils.getMachineId(),
      session_id: StateManager.sessionId,
      comment,
      consent: StateManager.consentGranted,
      age_group: StateManager.profile.ageGroup,
      gender: StateManager.profile.gender,
      roles: StateManager.profile.roles,
      participant_id: StateManager.profile.participantId
    };

    try {
      const res = await fetch('/comment', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(payload),
      });

      if (!res.ok) {
        return {
          success: false,
          status: res.status
        };
      }

      return {
        success: true
      };
    } catch (err) {
      return {
        success: false,
        error: err
      };
    }
  },

  /**
   * Submit message feedback to the server
   * @param {Object} feedbackData - Feedback data object
   * @returns {Promise<Object>} Response object with status
   */
  async submitFeedback(feedbackData) {
    const payload = {
      ...feedbackData,
      consent: StateManager.consentGranted,
      age_group: StateManager.profile.ageGroup,
      gender: StateManager.profile.gender,
      roles: StateManager.profile.roles,
      participant_id: StateManager.profile.participantId,
      lang: StateManager.currentLang
    };

    try {
      const res = await fetch('/feedback', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify(payload),
      });

      if (!res.ok) {
        return {
          success: false,
          status: res.status
        };
      }

      return {
        success: true
      };
    } catch (err) {
      return {
        success: false,
        error: err
      };
    }
  }
};