const { Command } = require('../../../../interfaces/');
const { GuildMember } = require('../../../../extensions/');
const { Emojis } = require('../../../../../util/');

class GrantCommand extends Command {

    constructor(client) {

        super(client, {
            name: 'grant',
            module: 'administration',
            usage: "<role..|user..> <permissions..>",
            examples: [
                "\"Server Moderators\" module:moderation",
                "@nolan#2887 command:kick"
            ],
            memberPermissions: ['ADMINISTRATOR', 'MANAGE_GUILD'],
            showUsage: true,
            guildOnly: true,
            arguments: [
                {
                    name: 'channel',
                    aliases: ['channels'],
                    type: 'TEXTCHANNEL',
                    types: [
                        'FLAG',
                        'VERBAL'
                    ],
                    infinite: true
                }
            ]
        });

    }

    async execute(message, { params, args }) {

        const _permissions = await message.guild.permissions();

        const { parsed, parameters } = await this.client.resolver.infinite(params, [
            this.client.resolver.resolveMember.bind(this.client.resolver),
            this.client.resolver.resolveRole.bind(this.client.resolver)
        ], true, message.guild);
        
        if(parsed.length === 0) {
            return message.respond(message.format('C_GRANT_MISSINGRESOLVEABLES'), {
                emoji: 'failure'
            });
        }

        const permissions = this.client.registry.components.filter((c) => c.type === 'command' ||
            c.type === 'module');

        let warning = false;
        let parsedPermissions = [];
        if(parameters.join(' ').toLowerCase() === 'all') {
            parsedPermissions = this.client.registry.components.filter((c) => c.type === 'command').map((c) => c.resolveable);
        } else {
            for(const perm of parameters) {
                const search = permissions.filter(filterInexact(perm)).first(); //eslint-disable-line no-use-before-define
                if(!search) continue;
                if(search.type === 'module') {
                    for(const component of search.components.values()) {
                        if(component.type === 'command') {
                            if(component.module.id === 'administration') warning = true;
                            parsedPermissions.push(component.resolveable);
                        }
                    }
                } else {
                    if(search.module.id === 'administration') warning = true;
                    parsedPermissions.push(search.resolveable);
                }
            }
        }

        if(parsedPermissions.length === 0) {
            return message.respond(message.format('C_GRANT_MISSINGPERMISSIONNODES'), {
                emoji: 'failure'
            });
        }

        for(const resolveable of parsed) {
            
            if(!_permissions[resolveable.id]) {
                _permissions[resolveable.id] = {
                    global: [],
                    channels: {}
                };
            }

            const existing = _permissions[resolveable.id];

            if(args.channel) {
                for(const channel of args.channel.value) {
                    const existingChannel = existing.channels[channel.id];
                    if(existingChannel) {
                        for(const perm of parsedPermissions) {
                            if(existingChannel.includes(perm)) {
                                continue;
                            } else {
                                existingChannel.push(perm);
                            }
                        }
                    } else {
                        existing.channels[channel.id] = parsedPermissions;
                    }
                }
            } else {
                for(const perm of parsedPermissions) {
                    if(existing.global.includes(perm)) {
                        continue;
                    } else {
                        existing.global.push(perm);
                    }
                }
            }
        }

        if(_permissions._id) delete _permissions._id; //some bullshit..

        try {
            await this.client.storageManager.mongodb.permissions.updateOne(
                { guildId: message.guild.id }, 
                _permissions
            );
        } catch(error) {
            this.client.logger.error(error);
            await message.respond(message.format('C_GRANT_DATABASEERROR'), { emoji: 'failure' });
            return undefined;
        }
        

        return message.respond(message.format('C_GRANT_SUCCESS', { 
            targets: parsed.map((p) => p instanceof GuildMember ? `**${p.user.tag}**` : `**${p.name}**`).join(' '), 
            permissions: parsedPermissions.map((p) => `\`${p}\``).join(', '),
            channel: args.channel ? ` ${message.format('C_GRANT_SUCCESSCHANNELS', { channels: args.channel.value.map((c) => `**#${c.name}**`).join(', '), plural: args.channel.value.length === 1 ? '' : 's' })}` : ''
        }), { 
            emoji: 'success',
            embed: warning ? {
                author: {
                    name: `${Emojis.warning} Warning`
                },
                description: message.format('C_GRANT_WARNING'),
                color: 0xffe15c
            } : null
        });

    }

}

module.exports = GrantCommand;

const filterInexact = (search) => (comp) => comp.id.toLowerCase().includes(search) ||
        comp.resolveable.toLowerCase().includes(search) ||
        comp.aliases && (comp.aliases.some((ali) => `${comp.type}:${ali}`.toLowerCase().includes(search)) ||
        comp.aliases.some((ali) => ali.toLowerCase().includes(search)));