import moment from "moment";
import momenttz from "moment-timezone";
import xl from "excel4node";

import Pages from "./Pages";

import AlbumsModel from "../models/albums";
import ErrorEvent from "../libs/error";

/**
 * Classe permettant la gestion des albums d'un utilisateur
 */
class Albums extends Pages {
    static replaceSpecialChars(str) {
        if (!str) {
            return "";
        }
        let final = str.toString();
        const find = ["&", "<", ">"];
        const replace = ["&amp;", "&lt;", "&gt;"];

        for (let i = 0; i < find.length; i += 1) {
            final = final.replace(new RegExp(find[i], "g"), replace[i]);
        }

        return final;
    }

    /**
     * Méthode permettant de convertir les rows en csv
     * @param {Array} rows
     *
     * @return {string}
     */
    static async convertToCsv(rows) {
        let data =
            "Artiste;Titre;Genre;Styles;Pays;Année;Date de sortie;Format\n\r";

        for (let i = 0; i < rows.length; i += 1) {
            const {
                artists_sort,
                title,
                genres,
                styles,
                country,
                year,
                released,
                formats,
            } = rows[i];

            let format = "";
            for (let j = 0; j < formats.length; j += 1) {
                format += `${format !== "" ? ", " : ""}${formats[j].name}`;
            }

            data += `${artists_sort};${title};${genres.join()};${styles.join()};${country};${year};${released};${format}\n\r`;
        }

        return data;
    }

    /**
     * Méthode permettant de convertir les rows en fichier xls
     * @param {Array} rows
     *
     * @return {Object}
     */
    static async convertToXls(rows) {
        const wb = new xl.Workbook();
        const ws = wb.addWorksheet("MusicTopus");

        const headerStyle = wb.createStyle({
            font: {
                color: "#FFFFFF",
                size: 11,
            },
            fill: {
                type: "pattern",
                patternType: "solid",
                bgColor: "#595959",
                fgColor: "#595959",
            },
        });
        const style = wb.createStyle({
            font: {
                color: "#000000",
                size: 11,
            },
            numberFormat: "0000",
        });

        const header = [
            "Artiste",
            "Titre",
            "Genre",
            "Styles",
            "Pays",
            "Année",
            "Date de sortie",
            "Format",
        ];
        for (let i = 0; i < header.length; i += 1) {
            ws.cell(1, i + 1)
                .string(header[i])
                .style(headerStyle);
        }

        for (let i = 0; i < rows.length; i += 1) {
            const currentRow = i + 2;
            const {
                artists_sort,
                title,
                genres,
                styles,
                country,
                year,
                released,
                formats,
            } = rows[i];

            let format = "";
            for (let j = 0; j < formats.length; j += 1) {
                format += `${format !== "" ? ", " : ""}${formats[j].name}`;
            }

            ws.cell(currentRow, 1).string(artists_sort).style(style);
            ws.cell(currentRow, 2).string(title).style(style);
            ws.cell(currentRow, 3).string(genres.join()).style(style);
            ws.cell(currentRow, 4).string(styles.join()).style(style);
            if (country) {
                ws.cell(currentRow, 5).string(country).style(style);
            }
            if (year) {
                ws.cell(currentRow, 6).number(year).style(style);
            }
            if (released) {
                ws.cell(currentRow, 7)
                    .date(momenttz.tz(released, "Europe/Paris").hour(12))
                    .style({ numberFormat: "dd/mm/yyyy" });
            }
            ws.cell(currentRow, 8).string(format).style(style);
        }

        return wb;
    }

    /**
     * Méthode permettant de convertir les rows en csv pour importer dans MusicTopus
     * @param {Array} rows
     *
     * @return {string}
     */
    static async convertToXml(rows) {
        let data = '<?xml version="1.0" encoding="UTF-8"?>\n\r<albums>';

        for (let i = 0; i < rows.length; i += 1) {
            const {
                discogsId,
                year,
                released,
                uri,
                artists,
                artists_sort,
                labels,
                series,
                companies,
                formats,
                title,
                country,
                notes,
                identifiers,
                videos,
                genres,
                styles,
                tracklist,
                extraartists,
                images,
                thumb,
            } = rows[i];

            let artistsList = "";
            let labelList = "";
            let serieList = "";
            let companiesList = "";
            let formatsList = "";
            let identifiersList = "";
            let videosList = "";
            let genresList = "";
            let stylesList = "";
            let tracklistList = "";
            let extraartistsList = "";
            let imagesList = "";

            for (let j = 0; j < artists.length; j += 1) {
                artistsList += `<artist>
                <name>${Albums.replaceSpecialChars(artists[j].name)}</name>
                <anv>${Albums.replaceSpecialChars(artists[j].anv)}</anv>
                <join>${Albums.replaceSpecialChars(artists[j].join)}</join>
                <role>${Albums.replaceSpecialChars(artists[j].role)}</role>
                <tracks>${Albums.replaceSpecialChars(
                    artists[j].tracks
                )}</tracks>
                <id>${Albums.replaceSpecialChars(artists[j].id)}</id>
                <resource_url>${Albums.replaceSpecialChars(
                    artists[j].resource_url
                )}</resource_url>
                <thumbnail_url>${Albums.replaceSpecialChars(
                    artists[j].thumbnail_url
                )}</thumbnail_url>
            </artist>`;
            }

            for (let j = 0; j < labels.length; j += 1) {
                labelList += `<label>
                <name>${Albums.replaceSpecialChars(labels[j].name)}</name>
                <catno>${Albums.replaceSpecialChars(labels[j].catno)}</catno>
                <entity_type>${Albums.replaceSpecialChars(
                    labels[j].entity_type
                )}</entity_type>
                <entity_type_name>${Albums.replaceSpecialChars(
                    labels[j].entity_type
                )}</entity_type_name>
                <id>${Albums.replaceSpecialChars(labels[j].id)}</id>
                <resource_url>${Albums.replaceSpecialChars(
                    labels[j].resource_url
                )}</resource_url>
                <thumbnail_url>${Albums.replaceSpecialChars(
                    labels[j].thumbnail_url
                )}</thumbnail_url>
            </label>
            `;
            }

            for (let j = 0; j < series.length; j += 1) {
                serieList += `<serie>
                <name>${Albums.replaceSpecialChars(series[j].name)}</name>
                <catno>${Albums.replaceSpecialChars(series[j].catno)}</catno>
                <entity_type>${Albums.replaceSpecialChars(
                    series[j].entity_type
                )}</entity_type>
                <entity_type_name>${Albums.replaceSpecialChars(
                    series[j].entity_type_name
                )}</entity_type_name>
                <id>${Albums.replaceSpecialChars(series[j].id)}</id>
                <resource_url>${Albums.replaceSpecialChars(
                    series[j].resource_url
                )}</resource_url>
                <thumbnail_url>${Albums.replaceSpecialChars(
                    series[j].thumbnail_url
                )}</thumbnail_url>
            </serie>
            `;
            }

            for (let j = 0; j < companies.length; j += 1) {
                companiesList += `<company>
                <name>${Albums.replaceSpecialChars(companies[j].name)}</name>
                <catno>${Albums.replaceSpecialChars(companies[j].catno)}</catno>
                <entity_type>${Albums.replaceSpecialChars(
                    companies[j].entity_type
                )}</entity_type>
                <entity_type_name>${Albums.replaceSpecialChars(
                    companies[j].entity_type_name
                )}</entity_type_name>
                <id>${Albums.replaceSpecialChars(companies[j].id)}</id>
                <resource_url>${Albums.replaceSpecialChars(
                    companies[j].resource_url
                )}</resource_url>
                <thumbnail_url>${Albums.replaceSpecialChars(
                    companies[j].thumbnail_url
                )}</thumbnail_url>
            </company>
            `;
            }

            for (let j = 0; j < formats.length; j += 1) {
                let descriptions = "";
                if (formats[j].descriptions) {
                    for (
                        let k = 0;
                        k < formats[j].descriptions.length;
                        k += 1
                    ) {
                        descriptions += `<description>${formats[j].descriptions[k]}</description>
                    `;
                    }
                }
                formatsList += `<format>
                <name>${Albums.replaceSpecialChars(formats[j].name)}</name>
                <qte>${Albums.replaceSpecialChars(formats[j].qty)}</qte>
                <text>${Albums.replaceSpecialChars(formats[j].text)}</text>
                <descriptions>
                    ${descriptions}
                </descriptions>
            </format>
            `;
            }

            for (let j = 0; j < identifiers.length; j += 1) {
                identifiersList += `<identifier>
                <type>${Albums.replaceSpecialChars(identifiers[j].type)}</type>
                <value>${Albums.replaceSpecialChars(
                    identifiers[j].value
                )}</value>
                <description>${Albums.replaceSpecialChars(
                    identifiers[j].description
                )}</description>
            </identifier>
            `;
            }

            for (let j = 0; j < videos.length; j += 1) {
                videosList += `<video embed="${videos[j].embed}">
                <uri>${Albums.replaceSpecialChars(videos[j].uri)}</uri>
                <title>${Albums.replaceSpecialChars(videos[j].title)}</title>
                <description>${Albums.replaceSpecialChars(
                    videos[j].description
                )}</description>
                <duration>${Albums.replaceSpecialChars(
                    videos[j].duration
                )}</duration>
            </video>
            `;
            }

            for (let j = 0; j < genres.length; j += 1) {
                genresList += `<genre>${Albums.replaceSpecialChars(
                    genres[j]
                )}</genre>
            `;
            }

            for (let j = 0; j < styles.length; j += 1) {
                stylesList += `<style>${Albums.replaceSpecialChars(
                    styles[j]
                )}</style>
            `;
            }

            for (let j = 0; j < tracklist.length; j += 1) {
                tracklistList += `<tracklist position="${
                    tracklist[j].position
                }" type="${tracklist[j].type_}" duration="${
                    tracklist[j].duration
                }">
                ${Albums.replaceSpecialChars(tracklist[j].title)}
            </tracklist>
            `;
            }

            for (let j = 0; j < extraartists.length; j += 1) {
                extraartistsList += `<extraartist>
                <name>${Albums.replaceSpecialChars(extraartists[j].name)}</name>
                <anv>${Albums.replaceSpecialChars(extraartists[j].anv)}</anv>
                <join>${Albums.replaceSpecialChars(extraartists[j].join)}</join>
                <role>${Albums.replaceSpecialChars(extraartists[j].role)}</role>
                <tracks>${Albums.replaceSpecialChars(
                    extraartists[j].tracks
                )}</tracks>
                <id>${Albums.replaceSpecialChars(extraartists[j].id)}</id>
                <resource_url>${Albums.replaceSpecialChars(
                    extraartists[j].resource_url
                )}</resource_url>
                <thumbnail_url>${Albums.replaceSpecialChars(
                    extraartists[j].thumbnail_url
                )}</thumbnail_url>
            </extraartist>
            `;
            }

            for (let j = 0; j < images.length; j += 1) {
                imagesList += `<image type="${images[j].type}" width="${
                    images[j].width
                }" height="${images[j].height}">
                <uri>${Albums.replaceSpecialChars(images[j].uri)}</uri>
                <resource_url>${Albums.replaceSpecialChars(
                    images[j].resource_url
                )}</resource_url>
                <uri150>${Albums.replaceSpecialChars(
                    images[j].resource_url
                )}</uri150>
            </image>
            `;
            }

            data += `
    <album>
        <discogId>${discogsId}</discogId>
        <title>${Albums.replaceSpecialChars(title)}</title>
        <artists_sort>${Albums.replaceSpecialChars(artists_sort)}</artists_sort>
        <artists>
            ${artistsList}
        </artists>
        <year>${year}</year>
        <country>${Albums.replaceSpecialChars(country)}</country>
        <released>${released}</released>
        <uri>${uri}</uri>
        <thumb>${thumb}</thumb>
        <labels>
            ${labelList}
        </labels>
        <series>
            ${serieList}
        </series>
        <companies>
            ${companiesList}
        </companies>
        <formats>
            ${formatsList}
        </formats>
        <notes>${Albums.replaceSpecialChars(notes)}</notes>
        <identifiers>
            ${identifiersList}
        </identifiers>
        <videos>
            ${videosList}
        </videos>
        <genres>
            ${genresList}
        </genres>
        <styles>
            ${stylesList}
        </styles>
        <tracklist>
            ${tracklistList}
        </tracklist>
        <extraartists>
            ${extraartistsList}
        </extraartists>
        <images>
            ${imagesList}
        </images>
    </album>`;
        }

        return `${data}</albums>`;
    }

    /**
     * Méthode permettant de convertir les rows en csv pour importer dans MusicTopus
     * @param {Array} rows
     *
     * @return {string}
     */
    static async convertToMusicTopus(rows) {
        let data = "itemId;createdAt;updatedAt\n\r";

        for (let i = 0; i < rows.length; i += 1) {
            const { discogsId, createdAt, updatedAt } = rows[i];

            data += `${discogsId};${createdAt};${updatedAt}\n\r`;
        }

        data += "v1.0";

        return data;
    }

    /**
     * Méthode permettant d'ajouter un album dans une collection
     * @param {Object} req
     * @return {Object}
     */
    static async postAddOne(req) {
        const { body, user } = req;
        const data = {
            ...body,
            discogsId: body.id,
            User: user._id,
        };
        data.released = data.released
            ? moment(data.released.replace("-00", "-01"))
            : null;
        delete data.id;

        const album = new AlbumsModel(data);

        return album.save();
    }

    /**
     * Méthode permettant de récupérer les éléments distincts d'une collection
     * @param {String} field
     * @param {ObjectId} user
     * @return {Array}
     */
    static async getAllDistincts(field, user) {
        const distincts = await AlbumsModel.find(
            {
                user,
            },
            [],
            {
                sort: {
                    [field]: 1,
                },
            }
        ).distinct(field);

        return distincts;
    }

    /**
     * Méthode permettant de récupérer la liste des albums d'une collection
     * @return {Object}
     */
    async getAll() {
        const {
            page,
            limit,
            exportFormat = "json",
            sort = "artists_sort",
            order = "asc",
            artists_sort,
            format,
        } = this.req.query;

        const where = {};

        if (artists_sort) {
            where.artists_sort = artists_sort;
        }
        if (format) {
            where["formats.name"] = format;
        }

        const count = await AlbumsModel.count({
            user: this.req.user._id,
            ...where,
        });

        let params = {
            sort: {
                [sort]: order.toLowerCase() === "asc" ? 1 : -1,
            },
        };

        if (page && limit) {
            const skip = (page - 1) * limit;

            params = {
                ...params,
                skip,
                limit,
            };
        }

        const rows = await AlbumsModel.find(
            {
                user: this.req.user._id,
                ...where,
            },
            [],
            params
        );

        switch (exportFormat) {
            case "csv":
                return Albums.convertToCsv(rows);
            case "xls":
                return Albums.convertToXls(rows);
            case "xml":
                return Albums.convertToXml(rows);
            case "musictopus":
                return Albums.convertToMusicTopus(rows);
            case "json":
            default:
                return {
                    rows,
                    count,
                };
        }
    }

    /**
     * Méthode permettant de supprimer un élément d'une collection
     * @return {Boolean}
     */
    async deleteOne() {
        const res = await AlbumsModel.findOneAndDelete({
            user: this.req.user._id,
            _id: this.req.params.itemId,
        });

        if (res) {
            return true;
        }

        throw new ErrorEvent(404, "Impossible de trouver cet album");
    }

    /**
     * Méthode permettant de créer la page "ma-collection"
     */
    async loadMyCollection() {
        const artists = await Albums.getAllDistincts(
            "artists_sort",
            this.req.user._id
        );
        const formats = await Albums.getAllDistincts(
            "formats.name",
            this.req.user._id
        );

        this.setPageContent("artists", artists);
        this.setPageContent("formats", formats);
    }

    /**
     * Méthode permettant d'afficher le détails d'un album
     */
    async loadItem() {
        const { itemId: _id } = this.req.params;
        const { _id: User } = this.req.user;
        const item = await AlbumsModel.findOne({
            _id,
            User,
        });

        this.setPageContent("item", item);
    }
}

export default Albums;