import App from '..';
import {
    GuildChannel,
    GuildMember,
    Message,
    TextChannel,
    ButtonBuilder,
    CommandInteraction,
    Role,
    ThreadChannel,
    ButtonInteraction,
    BaseInteraction,
    PermissionsBitField,
    EmbedBuilder,
    ButtonStyle,
    ActionRowBuilder,
} from 'discord.js';

import DiscordProvider from '../providers/Discord';
import Prisma from '../providers/Prisma';

import {
    makeSuccessEmbed,
    makeInfoEmbed,
    makeErrorEmbed,
    sendHybridInteractionMessageResponse,
    sendMessage
} from '../utils/DiscordMessage';
import DiscordModule, { HybridInteractionMessage } from '../utils/DiscordModule';

const EMBEDS = {
    NO_PERMISSION: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'You need ``ADMINISTRATOR`` permission on this guild!',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_PARAMETER: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Missing parameter',
            description: `You must define membership screening channel and role to enable this feature`,
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_ROLE_MENTIONED: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'No role mentioned',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_ROLE_FOUND: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Cannot find that role',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_CHANNEL_MENTIONED: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'No channel mentioned',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_CHANNEL_FOUND: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Cannot find that channel',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    MSINFO: (data: Message | BaseInteraction) => {
        return makeInfoEmbed({
            title: 'Membership Screening',
            description: `Membership Screening is a feature to prevent unwanted people to join your guild, similar to whitelist feature. Moderators can approve or deny join request`,
            fields: [
                {
                    name: 'Available arguments',
                    value: '``setRole`` ``setChannel`` ``createMessage``'
                }
            ],
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    ALREADY_ENABLED: (data: Message | BaseInteraction) => {
        return makeInfoEmbed({
            title: 'Membership Screening is already enabled',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    MESSAGE_CREATED: (data: Message | BaseInteraction) => {
        return makeSuccessEmbed({
            title: 'Membership Screening message created',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    ALREADY_DISABLED: (data: Message | BaseInteraction) => {
        return makeInfoEmbed({
            title: 'Membership Screening is already disabled',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    ENABLED: (data: Message | BaseInteraction) => {
        return makeSuccessEmbed({
            title: 'Enabled Membership Screening',
            description: `All new member join request will be sent in your defined channel`,
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    DISABLED: (data: Message | BaseInteraction) => {
        return makeSuccessEmbed({
            title: 'Disabled Membership Screening',
            description: `No longer accepting request, all new member can join directly`,
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    MANAGED_ROLE: (data: Message | BaseInteraction, role: Role) => {
        return makeErrorEmbed({
            title: 'You cannot use this role',
            description:
                '``' + role.name + '``' + ' is managed by external service and cannot be used',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CONFIGURED_ROLE: (data: Message | BaseInteraction, role: Role) => {
        return makeSuccessEmbed({
            title: 'Configured Membership Screening Role',
            description:
                'New member will be given a ' + '``' + role.name + '``' + ' role after approval',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CONFIGURED_CHANNEL: (data: Message | BaseInteraction, channel: GuildChannel) => {
        return makeSuccessEmbed({
            title: 'Configured Membership Screening Channel',
            description:
                'Anyone with ``VIEW_CHANNEL`` permission in ' +
                '``' +
                channel.name +
                '``' +
                ' can approve or deny request',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    INVALID_CHANNEL: (data: Message | BaseInteraction, channel: GuildChannel) => {
        return makeErrorEmbed({
            title: 'Invalid channel type, only TextChannel is supported',
            description: '``' + channel.name + '``' + ' is not a text channel',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    INVALID_CHANNEL_THREAD: (
        data: Message | BaseInteraction,
        channel: GuildChannel | ThreadChannel
    ) => {
        return makeErrorEmbed({
            title: 'Thread channel is not supported',
            description:
                '``' +
                channel.name +
                '``' +
                ' is a thread channel. Please use a regular text channel',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    BOT_NO_PERMISSION: (data: Message | BaseInteraction, channel: GuildChannel) => {
        return makeErrorEmbed({
            title: `I don't have permission`,
            description: 'I cannot access/send message in ' + '``' + channel.name + '``',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    NO_LONGER_VALID_ROLE: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'The configured role is no longer valid. Please update the role in configuration',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CANNOT_PERFORM_ASSIGN_ROLE: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Cannot grant the role to user, make sure I have permission to do that',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CANNOT_PERFORM_ASSIGN_KICK: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Cannot kick the user, make sure I have permission to do that',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CANNOT_PERFORM_ASSIGN_BAN: (data: Message | BaseInteraction) => {
        return makeErrorEmbed({
            title: 'Cannot ban the user, make sure I have permission to do that',
            user: data instanceof BaseInteraction ? data.user : data.author
        });
    },
    CREATE_MESSAGE: () => {
        return makeInfoEmbed({
            icon: '👋',
            title: 'Welcome to this server!',
            description: `This server have membership screening enabled, **you'll have access to the server when the moderators let you in**.\n\nAlso please make sure that you acknowledged the common rules that everyone should be doing no matter where, Discord ToS (https://discordapp.com/terms)`,
            user: DiscordProvider.client.user
        });
    }
};

export default class MembershipScreening extends DiscordModule {
    public id = 'Discord_MembershipScreening';
    public commands = ['membershipscreening', 'ms'];
    public commandInteractionName = 'membershipscreening';

    async GuildOnModuleCommand(args: any, message: Message) {
        await this.run(new HybridInteractionMessage(message), args);
    }

    async GuildModuleCommandInteractionCreate(interaction: CommandInteraction) {
        await this.run(new HybridInteractionMessage(interaction), interaction.options);
    }

    async GuildButtonInteractionCreate(interaction: ButtonInteraction) {
        const hybridData = new HybridInteractionMessage(interaction);
        const guild = hybridData.getGuild();
        const user = hybridData.getUser();
        const channel = hybridData.getChannel();

        if (!guild || !user || !channel) return;

        if (!this.isJsonValid(interaction.customId)) return;
        const payload = JSON.parse(interaction.customId);

        if (
            typeof payload.m === 'undefined' ||
            typeof payload.a === 'undefined' ||
            payload.m !== 'MembershipScreening'
        )
            return;

        const message = await channel.messages.fetch(interaction.message.id);
        if (!message) return;

        const embed = message.embeds;
        if (!embed || embed.length === 0) return;

        const PrismaGuild = await Prisma.client.guild.findFirst({ where: { id: guild.id } });
        if (!PrismaGuild) return;

        if (
            !PrismaGuild.MembershipScreening_Enabled ||
            PrismaGuild.MembershipScreening_ApprovalChannel === null ||
            PrismaGuild.MembershipScreening_GivenRole === null
        )
            return;

        const newEmbed = new EmbedBuilder(embed[0].data);

        newEmbed.setFooter({
            text: `${interaction.user.username}  |  v${App.version}`,
            iconURL: `${interaction.user.displayAvatarURL()}?size=4096`
        });

        if (['approve', 'deny', 'ban'].includes(payload.a)) {
            if (!payload.d.requester) return;

            const role = (await guild.roles.fetch()).find(
                (role) => role.id === PrismaGuild.MembershipScreening_GivenRole
            );
            const requesterMember = (await guild.members.fetch()).find(
                (member) => member.id === payload.d.requester
            );

            if (!role)
                return await interaction.reply({
                    ephemeral: true,
                    embeds: [EMBEDS.NO_LONGER_VALID_ROLE(interaction)]
                });

            if (!requesterMember) {
                newEmbed.addFields([
                    {
                        name: '❌ Invalid',
                        value: `Unable to find the user. User left already?`
                    }
                ]);
                return await message.edit({ components: [], embeds: [newEmbed] });
            }

            if (requesterMember.roles.cache.has(PrismaGuild.MembershipScreening_GivenRole)) {
                newEmbed.addFields([
                    {
                        name: '✅ Approved',
                        value: `By: Unknown (User already obtained the role by other means)`
                    }
                ]);
                return await message.edit({ components: [], embeds: [newEmbed] });
            }

            if (payload.a === 'approve') {
                try {
                    await requesterMember.roles.add(role);
                    newEmbed.addFields([
                        {
                            name: '✅ Approved',
                            value: `By: ${interaction.user.username}#${interaction.user.discriminator} (${interaction.user.id})`
                        }
                    ]);
                    await message.edit({ components: [], embeds: [newEmbed] });
                } catch (err) {
                    return interaction.reply({
                        ephemeral: true,
                        embeds: [EMBEDS.CANNOT_PERFORM_ASSIGN_ROLE(message)]
                    });
                }
            } else if (payload.a === 'deny') {
                try {
                    await requesterMember.kick();
                    newEmbed.addFields([
                        {
                            name: '❌ Denied',
                            value: `By: ${interaction.user.username}#${interaction.user.discriminator} (${interaction.user.id})`
                        }
                    ]);
                    await message.edit({ components: [], embeds: [newEmbed] });
                } catch (err) {
                    return interaction.reply({
                        ephemeral: true,
                        embeds: [EMBEDS.CANNOT_PERFORM_ASSIGN_KICK(message)]
                    });
                }
            } else if (payload.a === 'ban') {
                try {
                    await requesterMember.ban({
                        reason: `Membership Screening, action issued by ${interaction.user.username}#${interaction.user.discriminator} (${interaction.user.id})`
                    });
                    newEmbed.addFields([
                        {
                            name: '🔪 Banned',
                            value: `By: ${interaction.user.username}#${interaction.user.discriminator} (${interaction.user.id})`
                        }
                    ]);
                    await message.edit({ components: [], embeds: [newEmbed] });
                } catch (err) {
                    return interaction.reply({
                        ephemeral: true,
                        embeds: [EMBEDS.CANNOT_PERFORM_ASSIGN_BAN(message)]
                    });
                }
            }
        }
    }

    async run(data: HybridInteractionMessage, args: any) {
        const guild = data.getGuild();
        const user = data.getUser();
        const member = data.getMember();
        const channel = data.getChannel();

        if (!guild || !user || !member || !channel) return;

        const PrismaGuild = await Prisma.client.guild.findFirst({ where: { id: guild.id } });
        if (!PrismaGuild) return;

        const funct = {
            enable: async (data: HybridInteractionMessage) => {
                if (!PrismaGuild.MembershipScreening_Enabled) {
                    if (
                        PrismaGuild.MembershipScreening_GivenRole === null ||
                        PrismaGuild.MembershipScreening_ApprovalChannel == null
                    )
                        return await sendHybridInteractionMessageResponse(data, {
                            embeds: [EMBEDS.NO_PARAMETER(data.getRaw())]
                        });

                    await Prisma.client.guild.update({
                        where: { id: guild.id },
                        data: { MembershipScreening_Enabled: true }
                    });

                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.ENABLED(data.getRaw())]
                    });
                } else
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.ALREADY_ENABLED(data.getRaw())]
                    });
            },
            disable: async (data: HybridInteractionMessage) => {
                if (PrismaGuild.MembershipScreening_Enabled) {
                    await Prisma.client.guild.update({
                        where: { id: guild.id },
                        data: { MembershipScreening_Enabled: false }
                    });

                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.DISABLED(data.getRaw())]
                    });
                } else
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.ALREADY_DISABLED(data.getRaw())]
                    });
            },
            setRole: async (data: HybridInteractionMessage) => {
                let role: Role | undefined;

                if (data.isMessage()) {
                    let _name: string;
                    if (typeof args[1] === 'undefined')
                        return await sendHybridInteractionMessageResponse(data, {
                            embeds: [EMBEDS.NO_ROLE_MENTIONED(data.getRaw())]
                        });

                    let __name = args;
                    __name.shift();
                    _name = __name.join(' ');

                    role =
                        data.getMessage().mentions.roles.first() ||
                        guild.roles.cache.find((role) => role.name === _name);
                } else if (data.isApplicationCommand())
                    role = guild.roles.cache.find(
                        (role) => role.id === data.getSlashCommand().options.get('role')?.role?.id
                    );

                if (!role)
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.NO_ROLE_FOUND(data.getRaw())]
                    });

                if (role.managed)
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.MANAGED_ROLE(data.getRaw(), role)]
                    });

                await Prisma.client.guild.update({
                    where: { id: guild.id },
                    data: { MembershipScreening_GivenRole: role.id }
                });

                return await sendHybridInteractionMessageResponse(data, {
                    embeds: [EMBEDS.CONFIGURED_ROLE(data.getRaw(), role)]
                });
            },
            setChannel: async (data: HybridInteractionMessage) => {
                let mentionChannel;
                if (data.isMessage()) {
                    if (!args[1])
                        return await sendHybridInteractionMessageResponse(data, {
                            embeds: [EMBEDS.NO_CHANNEL_MENTIONED(data.getRaw())]
                        });
                    mentionChannel = data.getMessage().mentions.channels.first();
                } else if (data.isApplicationCommand())
                    mentionChannel = data.getSlashCommand().options.get('channel', true).channel;

                if (!mentionChannel)
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.NO_CHANNEL_FOUND(data.getRaw())]
                    });

                let TargetChannel = guild.channels.cache.get(mentionChannel.id);
                if (!TargetChannel) return;

                if (TargetChannel instanceof ThreadChannel || TargetChannel.isThread())
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.INVALID_CHANNEL_THREAD(data.getRaw(), TargetChannel)]
                    });

                if (!TargetChannel.isTextBased())
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.INVALID_CHANNEL(data.getRaw(), TargetChannel)]
                    });

                if (
                    !guild.members.me?.permissionsIn(TargetChannel)
                        .has([PermissionsBitField.Flags.SendMessages, PermissionsBitField.Flags.ViewChannel])
                )
                    return await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.BOT_NO_PERMISSION(data.getRaw(), TargetChannel)]
                    });

                await Prisma.client.guild.update({
                    where: { id: guild.id },
                    data: { MembershipScreening_ApprovalChannel: mentionChannel.id }
                });
                return await sendHybridInteractionMessageResponse(data, {
                    embeds: [EMBEDS.CONFIGURED_CHANNEL(data.getRaw(), TargetChannel)]
                });
            },
            createMessage: async (data: HybridInteractionMessage) => {
                if (data.isMessage())
                    return await sendMessage(channel, undefined, {
                        embeds: [EMBEDS.CREATE_MESSAGE()]
                    });
                else if (data.isApplicationCommand()) {
                    await sendHybridInteractionMessageResponse(data, {
                        embeds: [EMBEDS.MESSAGE_CREATED(data.getRaw())]
                    });
                    return await sendMessage(channel, undefined, {
                        embeds: [EMBEDS.CREATE_MESSAGE()]
                    });
                }
            }
        };

        let query;

        if (!member.permissions.has([PermissionsBitField.Flags.Administrator]))
            return await sendHybridInteractionMessageResponse(data, {
                embeds: [EMBEDS.NO_PERMISSION(data.getRaw())]
            });

        if (data.isMessage()) {
            if (args.length === 0)
                return await sendHybridInteractionMessageResponse(data, {
                    embeds: [EMBEDS.MSINFO(data.getRaw())]
                });

            query = args[0].toLowerCase();
        } else if (data.isApplicationCommand()) query = args.getSubcommand();

        switch (query) {
            case 'enable':
            case 'on':
                return await funct.enable(data);
            case 'disable':
            case 'off':
                return await funct.disable(data);
            case 'setrole':
                return await funct.setRole(data);
            case 'setchannel':
                return await funct.setChannel(data);
            case 'createmessage':
                return await funct.createMessage(data);
        }
    }

    async GuildMemberAdd(member: GuildMember) {
        if (member.user.bot) return;

        const Guild = await Prisma.client.guild.findFirst({ where: { id: member.guild.id } });
        if (!Guild) return;

        if (!Guild.MembershipScreening_Enabled) return;
        if (Guild.MembershipScreening_ApprovalChannel === null) return;
        if (Guild.MembershipScreening_GivenRole === null) return;

        let channel = undefined;
        try {
            channel = (await DiscordProvider.client.channels.fetch(
                Guild.MembershipScreening_ApprovalChannel
            )) as TextChannel;
        } catch (err) {
            // TODO: Handle channel not found error
            return;
        }
        if (!channel) return;

        const embed = makeInfoEmbed({
            title: 'New member joined!',
            description: `${member.user.username}#${member.user.discriminator} (${member.user.id})`,
            fields: [
                {
                    name: 'Account Information',
                    value: `Account age: <t:${Math.round(
                        member.user.createdAt.getTime() / 1000
                    )}:R>`
                }
            ]
        });

        embed.setThumbnail(`${member.user.displayAvatarURL()}?size=4096`);

        const row = new ActionRowBuilder<ButtonBuilder>()
            .addComponents([
                new ButtonBuilder()
                    .setCustomId(
                        JSON.stringify({
                            m: 'MembershipScreening',
                            a: 'approve',
                            d: {
                                requester: member.id
                            }
                        })
                    )
                    .setEmoji('✅')
                    .setLabel('  Approve')
                    .setStyle(ButtonStyle.Success),
                new ButtonBuilder()
                    .setCustomId(
                        JSON.stringify({
                            m: 'MembershipScreening',
                            a: 'deny',
                            d: {
                                requester: member.id
                            }
                        })
                    )
                    .setEmoji('⛔')
                    .setLabel('  Deny and kick')
                    .setStyle(ButtonStyle.Danger),
                new ButtonBuilder()
                    .setCustomId(
                        JSON.stringify({
                            m: 'MembershipScreening',
                            a: 'ban',
                            d: {
                                requester: member.id
                            }
                        })
                    )
                    .setEmoji('🔪')
                    .setLabel('  Vision Hunt Decree (Ban)')
                    .setStyle(ButtonStyle.Danger)
            ]
            );

        await channel.send({ content: '\u200b', embeds: [embed], components: [row] });
    }

    private isJsonValid(jsonString: string) {
        try {
            let o = JSON.parse(jsonString);
            if (o && typeof o === 'object') {
                return true;
                //return o;
            }
        } catch (e) {}

        return false;
    }
}