const db = require('../models');
const FileDBApi = require('./file');
const crypto = require('crypto');
const Utils = require('../utils');



const Sequelize = db.Sequelize;
const Op = Sequelize.Op;

module.exports = class DownloadsDBApi {
    

    
    static async create(data, options) {
        const currentUser = (options && options.currentUser) || { id: null };
        const transaction = (options && options.transaction) || undefined;

        const downloads = await db.downloads.create(
            {
                id: data.id || undefined,
        
        title: data.title || null,

        download_type: data.download_type
        ||
        null
            ,
            
        status: data.status
        ||
        null
            ,
            
        progress_percent: data.progress_percent
        ||
        null
            ,
            
        total_bytes: data.total_bytes
        ||
        null
            ,
            
        downloaded_bytes: data.downloaded_bytes
        ||
        null
            ,
            
        storage_path: data.storage_path
        ||
        null
            ,
            
        only_on_wifi: data.only_on_wifi
        ||
        false
        
            ,
            
        queued_at: data.queued_at
        ||
        null
            ,
            
        started_at: data.started_at
        ||
        null
            ,
            
        finished_at: data.finished_at
        ||
        null
            ,
            
            importHash: data.importHash || null,
            createdById: currentUser.id,
            updatedById: currentUser.id,
    },
        { transaction },
    );

        
        await downloads.setUser( data.user || null, {
            transaction,
        });
        
        await downloads.setSeries( data.series || null, {
            transaction,
        });
        
        await downloads.setChapter( data.chapter || null, {
            transaction,
        });
        

        

        

        return downloads;
    }
    

    static async bulkImport(data, options) {
        const currentUser = (options && options.currentUser) || { id: null };
        const transaction = (options && options.transaction) || undefined;

        // Prepare data - wrapping individual data transformations in a map() method
        const downloadsData = data.map((item, index) => ({
                id: item.id || undefined,
                title: item.title || null,
                download_type: item.download_type
            ||
            null
            ,
            
                status: item.status
            ||
            null
            ,
            
                progress_percent: item.progress_percent
            ||
            null
            ,
            
                total_bytes: item.total_bytes
            ||
            null
            ,
            
                downloaded_bytes: item.downloaded_bytes
            ||
            null
            ,
            
                storage_path: item.storage_path
            ||
            null
            ,
            
                only_on_wifi: item.only_on_wifi
            ||
            false
        
            ,
            
                queued_at: item.queued_at
            ||
            null
            ,
            
                started_at: item.started_at
            ||
            null
            ,
            
                finished_at: item.finished_at
            ||
            null
            ,
            
            importHash: item.importHash || null,
            createdById: currentUser.id,
            updatedById: currentUser.id,
            createdAt: new Date(Date.now() + index * 1000),
    }));

        // Bulk create items
        const downloads = await db.downloads.bulkCreate(downloadsData, { transaction });

        // For each item created, replace relation files
        

        return downloads;
    }

    static async update(id, data,  options) {
        const currentUser = (options && options.currentUser) || {id: null};
        const transaction = (options && options.transaction) || undefined;
        

        const downloads = await db.downloads.findByPk(id, {}, {transaction});


        

        const updatePayload = {};
        
        if (data.title !== undefined) updatePayload.title = data.title;

        if (data.download_type !== undefined) updatePayload.download_type = data.download_type;
        
        
        if (data.status !== undefined) updatePayload.status = data.status;
        
        
        if (data.progress_percent !== undefined) updatePayload.progress_percent = data.progress_percent;
        
        
        if (data.total_bytes !== undefined) updatePayload.total_bytes = data.total_bytes;
        
        
        if (data.downloaded_bytes !== undefined) updatePayload.downloaded_bytes = data.downloaded_bytes;
        
        
        if (data.storage_path !== undefined) updatePayload.storage_path = data.storage_path;
        
        
        if (data.only_on_wifi !== undefined) updatePayload.only_on_wifi = data.only_on_wifi;
        
        
        if (data.queued_at !== undefined) updatePayload.queued_at = data.queued_at;
        
        
        if (data.started_at !== undefined) updatePayload.started_at = data.started_at;
        
        
        if (data.finished_at !== undefined) updatePayload.finished_at = data.finished_at;
        
        
        updatePayload.updatedById = currentUser.id;

        await downloads.update(updatePayload, {transaction});

        
        
        if (data.user !== undefined) {
            await downloads.setUser(
              
              data.user,
              
              { transaction }
            );
        }
        
        if (data.series !== undefined) {
            await downloads.setSeries(
              
              data.series,
              
              { transaction }
            );
        }
        
        if (data.chapter !== undefined) {
            await downloads.setChapter(
              
              data.chapter,
              
              { transaction }
            );
        }
        

        
        

        

        return downloads;
    }

    static async deleteByIds(ids, options) {
        const currentUser = (options && options.currentUser) || { id: null };
        const transaction = (options && options.transaction) || undefined;

        const downloads = await db.downloads.findAll({
            where: {
                id: {
                    [Op.in]: ids,
                },
            },
            transaction,
        });

        await db.sequelize.transaction(async (transaction) => {
            for (const record of downloads) {
                await record.update(
                    {deletedBy: currentUser.id},
                    {transaction}
                );
            }
            for (const record of downloads) {
                await record.destroy({transaction});
            }
        });


        return downloads;
    }

    static async remove(id, options) {
        const currentUser = (options && options.currentUser) || {id: null};
        const transaction = (options && options.transaction) || undefined;

        const downloads = await db.downloads.findByPk(id, options);

        await downloads.update({
            deletedBy: currentUser.id
        }, {
            transaction,
        });

        await downloads.destroy({
            transaction
        });

        return downloads;
    }

    static async findBy(where, options) {
        const transaction = (options && options.transaction) || undefined;

        const downloads = await db.downloads.findOne(
            { where },
            { transaction },
        );

        if (!downloads) {
            return downloads;
        }

        const output = downloads.get({plain: true});

        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        output.user = await downloads.getUser({
            transaction
        });
        
        
        output.series = await downloads.getSeries({
            transaction
        });
        
        
        output.chapter = await downloads.getChapter({
            transaction
        });
        
        

        return output;
    }

    static async findAll(
          filter,
           options
        ) {
        const limit = filter.limit || 0;
        let offset = 0;
        let where = {};
        const currentPage = +filter.page;

        

        

        offset = currentPage * limit;

        const orderBy = null;

    const transaction = (options && options.transaction) || undefined;

    let include = [

      {
        model: db.users,
        as: 'user',
        
        where: filter.user ? {
          [Op.or]: [
            { id: { [Op.in]: filter.user.split('|').map(term => Utils.uuid(term)) } },
            {
              firstName: {
                [Op.or]: filter.user.split('|').map(term => ({ [Op.iLike]: `%${term}%` }))
              }
            },
          ]
        } : {},
        
      },

      {
        model: db.series,
        as: 'series',
        
        where: filter.series ? {
          [Op.or]: [
            { id: { [Op.in]: filter.series.split('|').map(term => Utils.uuid(term)) } },
            {
              title: {
                [Op.or]: filter.series.split('|').map(term => ({ [Op.iLike]: `%${term}%` }))
              }
            },
          ]
        } : {},
        
      },

      {
        model: db.chapters,
        as: 'chapter',
        
        where: filter.chapter ? {
          [Op.or]: [
            { id: { [Op.in]: filter.chapter.split('|').map(term => Utils.uuid(term)) } },
            {
              title: {
                [Op.or]: filter.chapter.split('|').map(term => ({ [Op.iLike]: `%${term}%` }))
              }
            },
          ]
        } : {},
        
      },



    ];

        if (filter) {
            if (filter.id) {
                where = {
                    ...where,
                    ['id']: Utils.uuid(filter.id),
                };
            }

            if (filter.title) {
                where = {
                    ...where,
                    [Op.and]: Utils.ilike(
                        'downloads',
                        'title',
                        filter.title,
                    ),
                };
            }

            if (filter.storage_path) {
                where = {
                    ...where,
                    [Op.and]: Utils.ilike(
                        'downloads',
                        'storage_path',
                        filter.storage_path,
                    ),
                };
            }
            

            
            

            
            if (filter.progress_percentRange) {
                const [start, end] = filter.progress_percentRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    progress_percent: {
                    ...where.progress_percent,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    progress_percent: {
                    ...where.progress_percent,
                            [Op.lte]: end,
                    },
                };
                }
            }
            
            if (filter.total_bytesRange) {
                const [start, end] = filter.total_bytesRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    total_bytes: {
                    ...where.total_bytes,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    total_bytes: {
                    ...where.total_bytes,
                            [Op.lte]: end,
                    },
                };
                }
            }
            
            if (filter.downloaded_bytesRange) {
                const [start, end] = filter.downloaded_bytesRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    downloaded_bytes: {
                    ...where.downloaded_bytes,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    downloaded_bytes: {
                    ...where.downloaded_bytes,
                            [Op.lte]: end,
                    },
                };
                }
            }
            
            if (filter.queued_atRange) {
                const [start, end] = filter.queued_atRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    queued_at: {
                    ...where.queued_at,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    queued_at: {
                    ...where.queued_at,
                            [Op.lte]: end,
                    },
                };
                }
            }
            
            if (filter.started_atRange) {
                const [start, end] = filter.started_atRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    started_at: {
                    ...where.started_at,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    started_at: {
                    ...where.started_at,
                            [Op.lte]: end,
                    },
                };
                }
            }
            
            if (filter.finished_atRange) {
                const [start, end] = filter.finished_atRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                    finished_at: {
                    ...where.finished_at,
                            [Op.gte]: start,
                    },
                };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                    finished_at: {
                    ...where.finished_at,
                            [Op.lte]: end,
                    },
                };
                }
            }
            

            if (filter.active !== undefined) {
                where = {
                    ...where,
                    active: filter.active === true || filter.active === 'true'
                };
            }

            
            if (filter.download_type) {
                where = {
                    ...where,
                download_type: filter.download_type,
            };
            }
            
            if (filter.status) {
                where = {
                    ...where,
                status: filter.status,
            };
            }
            
            if (filter.only_on_wifi) {
                where = {
                    ...where,
                only_on_wifi: filter.only_on_wifi,
            };
            }
            


      

      

      



            if (filter.createdAtRange) {
                const [start, end] = filter.createdAtRange;

                if (start !== undefined && start !== null && start !== '') {
                    where = {
                        ...where,
                        ['createdAt']: {
                            ...where.createdAt,
                            [Op.gte]: start,
                        },
                    };
                }

                if (end !== undefined && end !== null && end !== '') {
                    where = {
                        ...where,
                        ['createdAt']: {
                            ...where.createdAt,
                            [Op.lte]: end,
                        },
                    };
                }
            }
        }
        

        

        const queryOptions = {
            where,
            include,
            distinct: true,
            order: filter.field && filter.sort
                ? [[filter.field, filter.sort]]
                : [['createdAt', 'desc']],
            transaction: options?.transaction,
            logging: console.log
        };

        if (!options?.countOnly) {
            queryOptions.limit = limit ? Number(limit) : undefined;
            queryOptions.offset = offset ? Number(offset) : undefined;
        }

        try {
            const { rows, count } = await db.downloads.findAndCountAll(queryOptions);

            return {
                rows: options?.countOnly ? [] : rows,
                count: count
            };
        } catch (error) {
            console.error('Error executing query:', error);
            throw error;
        }
    }

    static async findAllAutocomplete(query, limit, offset, ) {
        let where = {};
        
        

        if (query) {
            where = {
                [Op.or]: [
                    { ['id']: Utils.uuid(query) },
                    Utils.ilike(
                        'downloads',
                        'title',
                        query,
                    ),
                    Utils.ilike(
                        'downloads',
                        'status',
                        query,
                    ),
                ],
            };
        }

        const records = await db.downloads.findAll({
            attributes: [ 'id', 'title' ],
            where,
            limit: limit ? Number(limit) : undefined,
            offset: offset ? Number(offset) : undefined,
            orderBy: [['title', 'ASC']],
        });

        return records.map((record) => ({
            id: record.id,
            label: record.title || record.id,
        }));
    }

    
};