const { Setting } = require('../../../../interfaces/');
const { Emojis } = require('../../../../../util/');

const { PermissionNames, EmbedLimits } = require('../../../../../util/Constants.js'); 

const Constants = {
    Types: {
        role: [
            'muteRole',
            'mutedRole'
        ],
        create: [
            'createMute',
            'createMuted',
            'createMuteRole',
            'createMutedRole'
        ],
        type: [
            'muteType',
            'mutedType'
        ],
        permanent: [
            'permaMute',
            'permanentMute'
        ],
        duration: [
            'defaultMuteDuration',
            'muteDuration'
        ]
    },
    MuteTypes: [0, 1, 2],
    MaxCharacters: 98,
    MaxIssues: 6
};

class MuteSetting extends Setting {

    constructor(client) {

        super(client, {
            name: 'mute',
            module: 'moderation',
            aliases: [
                'muted',
                'muteType',
                'mutedType',
                'muteRole',
                'mutedRole',
                'createMute',
                'createMuteRole',
                'createMuted',
                'createMutedRole',
                'permaMute',
                'permanentMute',
                'muteDuration',
                'defaultMuteDuration'
            ],
            // arguments: [
            //     {
            //         name: 'text',
            //         type: 'BOOLEAN',
            //         types: ['FLAG'],
            //         default: true
            //     },
            //     {
            //         name: 'voice',
            //         type: 'BOOLEAN',
            //         types: ['FLAG'],
            //         default: true
            //     }
            // ],
            usage: "<'create'|'type'|'permanent'|'default'|role> <value..>",
            examples: [
                "mute muted-role",
                "mute create Muted",
                "mute type 1",
                "mute permanent true",
                "mute default 1 day"
            ],
            resolve: 'GUILD',
            default: {
                mute: {
                    role: null,
                    type: 0,
                    defaultDuration: 3600,
                    permanent: false
                }
            }
        });

    }

    async handle(message, args) {

        const { params, parsedArguments } = await this._parseArguments(args, message.guild);
        if(params.length === 0) {
            return {
                msg: message.format('S_MUTE_MISSINGARGUMENTS'),
                error: true
            };
        }
    
        let type = 'role';
        let parameters = params.join(' ');

        if(!['mute', 'muted'].includes(message._settingCaller)) {
            for(const [ key, values ] of Object.entries(Constants.Types)) {
                if(values.map((v) => v.toLowerCase()).includes(message._settingCaller.toLowerCase())) {
                    type = key;
                    break;
                }
            }
        } else {
            const key = params[0].toLowerCase();
            if(['create', 'createrole'].includes(key)) type = 'create', parameters = params.splice(1).join(' '); //eslint-disable-line no-unused-expressions, no-sequences
            if(['type'].includes(key)) type = 'type', parameters = params.splice(1).join(' '); //eslint-disable-line no-unused-expressions, no-sequences
            if(['duration', 'defaultduration'].includes(key)) type = 'duration', parameters = params.splice(1).join(' '); //eslint-disable-line no-unused-expressions, no-sequences
            if(['perma', 'permamute', 'permanent'].includes(key)) type = 'permanent', parameters = params.splice(1).join(' '); //eslint-disable-line no-unused-expressions, no-sequences
        }

        if(type === 'role') {

            const role = await this.client.resolver.resolveRole(parameters, true, message.guild);
            if(!role) return {
                msg: message.format('S_MUTE_ROLEMISSING'),
                error: true
            };

            await message.guild._updateSettings({
                [this.index]: {
                    ...message.guild._settings[this.index],
                    role: role.id
                }
            });

            return {
                msg: message.format('S_MUTE_ROLESUCCESS', { role: role.name }),
                error: false
            };

        } else if(type === 'create') {

            const response = await this._createRole(message, parameters, parsedArguments);
            if(response.error) return response;

            const { role, issues, created, updatedPermissions } = response;
            
            await message.guild._updateSettings({
                [this.index]: {
                    ...message.guild._settings[this.index],
                    role: role.id
                }
            });

            const embed = {
                author: {
                    name: `${Emojis.warning} Warning`
                },
                color: 0xffe15c,
                description: message.format('S_MUTE_CREATESUCCESSWARNING'),
                fields: []
            };

            const addField = (array, type) => {
                const field = {
                    name: type === 'text' ? 'Text Channels' : 'Voice Channels',
                    value: ''
                };
                const sorted = array.sort((a, b) => a.position - b.position) || [];
                for(const i of sorted) {
                    const text = `${Emojis.role} **${i.role}** has ${i.permissions.map((p) => `\`${PermissionNames[p]}\``).join(', ')} in ${Emojis[i.type === 'text' ? 'text-channel' : 'voice-channel']} **${i.channel}**\n`;
                    if(field.value.length+text.length <= EmbedLimits.fieldValue) field.value += text;
                }
                return field;
            };

            const textIssues = issues.filter((i) => i.type === 'text');
            if(textIssues.length > 0) embed.fields.push(addField(textIssues, 'text'));

            const voiceIssues = issues.filter((i) => i.type === 'voice');
            if(voiceIssues.length > 0) embed.fields.push(addField(voiceIssues, 'voice'));

            message.respond(message.format(`S_MUTE_CREATESUCCESS${created ? 'ALT' : ''}`, {
                permissions: message.format(updatedPermissions ? 'S_MUTE_GENERATEDPERMISSIONS' : 'S_MUTE_UNGENERATEDPERMISSIONS'),
                role: role.name
            }), {
                emoji: 'success',
                embed: issues.length > 0 ? embed : null
            });

        } else if(type === 'type') {

            const number = parseInt(parameters);
            if(Number.isNaN(number)) return {
                msg: message.format('S_MUTE_TYPENAN'),
                error: true
            };

            if(!Constants.MuteTypes.includes(number)) return {
                msg: message.format('S_MUTE_TYPEINVALID'),
                error: true
            };

            await message.guild._updateSettings({
                [this.index]: {
                    ...message.guild._settings[this.index],
                    type: number
                }
            });

            return {
                msg: `${message.format('S_MUTE_TYPESUCCESS', { type: number })} ${message.format('S_MUTE_TYPESWITCH', { type: number }, true)}`,
                error: false
            };

        } else if(type === 'duration') {
            const time = this.client.resolver.resolveTime(parameters);
            if(!time) {
                return {
                    msg: message.format('S_MUTE_DEFAULTINVALID'),
                    error: true
                };
            }

            await message.guild._updateSettings({
                [this.index]: {
                    ...message.guild._settings[this.index],
                    defaultDuration: time
                }
            });

            return {
                msg: message.format('S_MUTE_DEFAULTSUCCESS', { time }),
                error: false
            };
        } else if(type === 'permanent') {
            const boolean = this.client.resolver.resolveBoolean(parameters);
            if(boolean === null) {
                return {
                    msg: message.format('S_MUTE_PERMANENTINVALID'),
                    error: true
                };
            }

            await message.guild._updateSettings({
                [this.index]: {
                    ...message.guild._settings[this.index],
                    permanent: boolean
                }
            });

            return {
                msg: message.format('S_MUTE_PERMANENTSUCCESS', { boolean }),
                error: false
            };
        }

        return { 
            error: false,
            ignore: true
        };

    }

    async _createRole(message, name = 'Muted', args) {

        const createRole = async (name) => {
            let role = null;
            if(name.length > Constants.MaxCharacters) name = name.slice(0, Constants.MaxCharacters);
            try {
                role = await message.guild.roles.create({
                    data: {
                        name
                    },
                    reason: super.reason(message.author)
                });
            } catch(error) {
                return {
                    msg: message.format('S_MUTE_ROLECREATEERROR'),
                    error: true
                };
            }
            return role;
        };

        const hasPermission = message.guild.me.hasPermission('MANAGE_ROLES');
        if(!hasPermission) return {
            msg: message.format('S_MUTE_ROLEMISSINGPERMISSION'),
            error: true
        };

        let role = null;

        const existing = await this.client.resolver.resolveRole(name, true, message.guild);
        if(existing) {
            const prompt = await message.prompt(message.format('S_MUTE_ROLEPROMPT', { 
                name: existing.name, 
                id: existing.id 
            }), { emoji: 'loading' });
            const boolean = this.client.resolver.resolveBoolean(prompt.content.toLowerCase());
            if(boolean === null) return {
                msg: message.format('S_MUTE_ROLEPROMPTERROR'),
                error: true
            };
            if(boolean) {
                role = existing;
            }
        }

        let created = false;

        if(!role) {
            role = await createRole(name);
            if(role.error) return role;
            created = true;
        }
        
        const issues = [];
        let updatedPermissions = false;

        for(const channel of message.guild.channels.cache.values()) {
            const configuration = channel.type === 'text'
                ? { permissions: { SEND_MESSAGES: false, ADD_REACTIONS: false }, bitwise: 0x800 }
                : { permissions: { CONNECT: false }, bitwise: 0x100000 };
            try {
                if(channel.type === 'text' || channel.type === 'voice') {
                    await channel.createOverwrite(role, configuration.permissions, super.reason(message.author));
                    for(const permission of channel.permissionOverwrites.values()) {
                        if(permission.type !== 'role') continue;
                        const permissionRole = await this.client.resolver.resolveRole(permission.id, true, message.guild);
                        if((permission.allow & configuration.bitwise) === configuration.bitwise) { //eslint-disable-line no-bitwise
                            const issue = {
                                role: permissionRole.name,
                                permissions: Object.keys(configuration.permissions),
                                channel: channel.name,
                                type: channel.type,
                                position: permissionRole.rawPosition
                            };
                            issues.push(issue);
                        }
                    }
                }
                updatedPermissions = true;
            } catch(error) {} //eslint-disable-line no-empty
        }

        return {
            error: false,
            updatedPermissions,
            created,
            issues,
            role
        };

    }

    fields(guild) {
        const setting = guild._settings[this.index];
        return [
            {
                name: '》 Mute Role',
                value: setting?.role ? `<@&${guild._settings[this.index].role}>` : '`N/A`',
                inline: true
            },
            {
                name: '》 Mute Type',
                value: `\`${setting?.type || 0}\``,
                inline: true
            },
            { name: '\u200b', value: '\u200b', inline: true }, //zero width spaces, not necessary, but could make things look nicer.
            {
                name: '》 Permanent Mutes',
                value: guild.format('SETTING_STATUS', { bool: Boolean(setting?.permanent) }, true),
                inline: true
            },
            {
                name: '》 Default Duration',
                value: `\`${setting.defaultDuration ? `${setting.defaultDuration} seconds` : 'N/A'}\``,
                inline: true
            },
            { name: '\u200b', value: '\u200b', inline: true } //zero width spaces, not necessary, but could make things look nicer.
        ];
    }

}

module.exports = MuteSetting;