'use strict';

import React from 'react';

import ReactS3FineUploader from '../ascribe_uploader/react_s3_fine_uploader';
import UploadButton from '../ascribe_uploader/ascribe_upload_button/upload_button';

import AppConstants from '../../constants/application_constants';
import ApiUrls from '../../constants/api_urls';

import ContractListActions from '../../actions/contract_list_actions';

import GlobalNotificationModel from '../../models/global_notification_model';
import GlobalNotificationActions from '../../actions/global_notification_actions';

import { formSubmissionValidation } from '../ascribe_uploader/react_s3_fine_uploader_utils';
import { getCookie } from '../../utils/fetch_api_utils';
import { getLangText } from '../../utils/lang_utils';


let ContractSettingsUpdateButton = React.createClass({
    propTypes: {
        contract: React.PropTypes.object
    },

    submitFile(file) {
        // override the blob with the key's value
        const contract = Object.assign(this.props.contract, { blob: file.key });

        // send it to the server
        ContractListActions
            .changeContract(contract)
            .then((res) => {
                // Display feedback to the user
                const notification = new GlobalNotificationModel(getLangText('Contract %s successfully updated', contract.name), 'success', 5000);
                GlobalNotificationActions.appendGlobalNotification(notification);

                // and refresh the contract list to get the updated contracs
                return ContractListActions
                            .fetchContractList(true)
                            // Also, reset the fineuploader component if fetch is successful so that the user can again 'update' his contract
                            .then(this.refs.fineuploader.reset)
                            .catch((err) => {
                                const notification = new GlobalNotificationModel(getLangText('Latest contract failed to load'), 'danger', 5000);
                                GlobalNotificationActions.appendGlobalNotification(notification);

                                return Promise.reject(err);
                            });
            }, (err) => {
                const notification = new GlobalNotificationModel(getLangText('Contract could not be updated'), 'danger', 5000);
                GlobalNotificationActions.appendGlobalNotification(notification);

                return Promise.reject(err);
            })
            .catch(console.logGlobal);
    },

    render() {
        return (
           <ReactS3FineUploader
               ref='fineuploader'
               fileInputElement={UploadButton({ showLabel: false })}
               keyRoutine={{
                   url: AppConstants.serverUrl + 's3/key/',
                   fileClass: 'contract'
               }}
               createBlobRoutine={{
                   url: ApiUrls.blob_contracts
               }}
               validation={{
                   itemLimit: AppConstants.fineUploader.validation.registerWork.itemLimit,
                   sizeLimit: AppConstants.fineUploader.validation.additionalData.sizeLimit,
                   allowedExtensions: ['pdf']
               }}
               setIsUploadReady={() =>{/* So that ReactS3FineUploader is not complaining */}}
               signature={{
                   endpoint: AppConstants.serverUrl + 's3/signature/',
                   customHeaders: {
                      'X-CSRFToken': getCookie(AppConstants.csrftoken)
                   }
               }}
               deleteFile={{
                   enabled: true,
                   method: 'DELETE',
                   endpoint: AppConstants.serverUrl + 's3/delete',
                   customHeaders: {
                      'X-CSRFToken': getCookie(AppConstants.csrftoken)
                   }
               }}
               fileClassToUpload={{
                   singular: getLangText('UPDATE'),
                   plural: getLangText('UPDATE')
               }}
               isReadyForFormSubmission={formSubmissionValidation.atLeastOneUploadedFile}
               submitFile={this.submitFile} />
        );
    }
});

export default ContractSettingsUpdateButton;