import {Vue, Component, Prop} from 'vue-property-decorator';
import FileUploadResponse from '@/interfaces/responses/FileUploadResponse';
import {isServerError} from "@/SearchDisplace/helpers";
import { Searcher } from '@/interfaces/Searcher';
import { eventBus } from '@/app';

@Component
export default class Home extends Vue {
    private availableSearchers: Array<Searcher> = [];
    public uiBlocked = false;
    public uploading = false;
    public fileUploaded: boolean = false;
    public document: File | null = null;
    public uploadResult: FileUploadResponse = {
        id: '',
        file_name: '',
    };
    public error: string = '';

    @Prop({default: []})
    public searchers!: Searcher[];

    public mounted()
    {
        eventBus.$on('changeRoute', this.changeRoute);

        this.availableSearchers = this.searchers;
    }

    /**
     * A method which uploads the files to the server for processing
     *
     * @param {any} event The event containing the uploaded files information
     */
    public async uploadFile(event: any): Promise<void> {
        let file = event.files[0];

        return this.uploadNewFile(file);
    }

    /**
     * A method which uploads the files to the server for processing
     *
     * @param {File} file The event containing the uploaded files information
     */
    public async uploadNewFile(file: File): Promise<void> {
        this.uploading = true;
        this.fileUploaded = false;

        this.$toast.add({severity: 'info', summary: 'Uploading...', detail: 'Uploading your file...', life: 3000});

        try {
            let response = await this.$api.uploadFile(file);

            this.fileUploaded = true;
            this.uploadResult = response;

            this.document = file;
        } catch (e) {
            this.uploading = false;
            this.fileUploaded = false;

            if (isServerError(e)) {
                if (e.response.data.hasOwnProperty('errors')) {
                    const errors = e.response.data.errors;

                    if (errors.hasOwnProperty('file')) {
                        this.error = errors.file[0];

                        return;
                    }
                }

                if (e.response.data.hasOwnProperty('message')) {
                    this.error = e.response.data.message;

                    return;
                }
            }

            this.error = 'There was an error uploading your file. Please try again later.';
        }
    }

    private onNewSearcher(searcher: Searcher): void {
        this.availableSearchers.unshift(searcher);
    }

    public onError(error: string) {
        this.error = error;
    }

    public changeRoute(url: string) {
        if (!this.fileUploaded) {
            window.location.href = url;
        }
    }
}