import {
  AnyMenuItem, FieldMenuItem,
  FieldMenuItemContext, FieldMenuItemSaveValue, MenuItem,
  MenuItemType, PromptMenuItem,
  RowBuilderFieldMenuItemContext
} from "../Menu/MenuRenderer.types";
import {GroupConfigurationTransformers} from "./GroupConfigurationTransformers";
import {GroupConfigurationHandler} from "./GroupConfigurationHandler";
import {
  channelMention,
  ChannelSelectMenuBuilder,
  ChannelType,
  inlineCode,
  italic,
  Snowflake,
  StringSelectMenuBuilder, StringSelectMenuOptionBuilder, TextInputBuilder,
  TextInputStyle
} from "discord.js";
import {ChannelId} from "../types/DiscordTypes";
import {MessageActionRowComponentBuilder} from "@discordjs/builders";
import {Prompt} from "../Menu/Modals/Prompt";

export class ConfigurationMenuHandler {

  constructor(
    private readonly configuration: GroupConfigurationHandler,
    private readonly transformer: GroupConfigurationTransformers
  ) {
  }


  public getMenuItems(): AnyMenuItem[] {
    return [
      {
        traversalKey: "channels",
        label: "Channels",
        description: "Provides settings to define in what channels the bot sends messages, when not directly interacting with it.",
        type: MenuItemType.Collection,
        children: [
          {
            traversalKey: "newPlaydates",
            label: "New Playdates",
            description: "Sets the channel, where the group gets notified, when new Playdates are set.",
            type: MenuItemType.Field,
            getCurrentValue: this.getChannelValue.bind(this),
            getActionRowBuilder: this.getChannelMenuBuilder.bind(this),
            setValue: this.setValue.bind(this)
          },
          {
            traversalKey: "playdateReminders",
            label: 'Playdate Reminders',
            description: "Sets the channel, where the group gets reminded of upcoming playdates.",
            type: MenuItemType.Field,
            getCurrentValue: this.getChannelValue.bind(this),
            getActionRowBuilder: this.getChannelMenuBuilder.bind(this),
            setValue: this.setValue.bind(this)
          }
        ]
      },
      {
        traversalKey: "permissions",
        label: "Permissions",
        description: "Allows customization, how the members are allowed to interact with the data stored in the group.",
        type: MenuItemType.Collection,
        children: [
          {
            traversalKey: "allowMemberManagingPlaydates",
            label: "Manage Playdates",
            description: "Defines if the members are allowed to manage playdates like adding or deleting them.",
            type: MenuItemType.Field,
            getCurrentValue: this.getPermissionBooleanValue.bind(this),
            getActionRowBuilder: this.getPermissionBooleanBuilder.bind(this),
            setValue: this.setValue.bind(this)
          }
        ]
      },
      {
        traversalKey: "calendar",
        label: "Calendar",
        description: "Provides settings for the metadata contained in the playdate exports.",
        type: MenuItemType.Collection,
        children: [
          this.createStringMenuItem({
            traversalKey: "title",
            label: "Title",
            description: "Defines how the calendar entry should be called.",
          }),
          this.createTextareaMenuItem({
            traversalKey: "description",
            label: "Description",
            description: "Sets the description for the calendar entry.",
          }),
          this.createStringMenuItem({
            traversalKey: "location",
            label: "Location",
            description: "Sets the location where the calendar should point to."
          }),
        ]
      },
    ]
  }
  
  private createStringMenuItem(metadata: MenuItem): PromptMenuItem {
    return {
      ...metadata,
      type: MenuItemType.Prompt,
      getCurrentValue: this.getStringValue.bind(this),
      getActionRowBuilder: this.getStringBuilder.bind(this),
      setValue: this.setValue.bind(this)
    };
  }
  private createTextareaMenuItem(metadata: MenuItem): PromptMenuItem {
    return {
      ...metadata,
      type: MenuItemType.Prompt,
      getCurrentValue: this.getStringValue.bind(this),
      getActionRowBuilder: this.getTextareaBuilder.bind(this),
      setValue: this.setValue.bind(this)
    };
  }
  
  private getChannelValue(context: FieldMenuItemContext): string {
    const value = this.configuration.getConfigurationByPath(context.path.join('.'));
    if (value === undefined) {
      return italic("None");
    }
    
    if (!value) {
      return inlineCode("None");
    }
    return channelMention(<ChannelId>value);
  }
  
  private getChannelMenuBuilder(context: FieldMenuItemContext): MessageActionRowComponentBuilder {
    return new ChannelSelectMenuBuilder()
      .setChannelTypes(ChannelType.GuildText)
      .setPlaceholder("New Value");
  }
  
  private getLocaleValue(context: FieldMenuItemContext): string {
    const value = this.configuration.getConfigurationByPath(context.path.join('.'));
    if (value === undefined) {
      return italic("None");
    }

    if (!value) {
      return inlineCode("Default");
    }
    
    const displaynames = new Intl.DisplayNames(["en"], {type: "language"});
    return displaynames.of((<Intl.Locale>value)?.baseName) ?? "Unknown";
  }
  
  private getLocaleMenuBuilder(context: FieldMenuItemContext): MessageActionRowComponentBuilder {
    const options = [
      'en-US',
      'fr-FR',
      'it-IT',
      'de-DE'
    ]
    const displaynames = new Intl.DisplayNames(["en"], {type: "language"});
    return new StringSelectMenuBuilder()
      .setOptions(
        options.map(intl => new StringSelectMenuOptionBuilder()
          .setLabel(displaynames.of(intl) ?? '')
          .setValue(intl)
        )
      )
  }
  
  private getPermissionBooleanValue(context: FieldMenuItemContext) {
    const value = this.configuration.getConfigurationByPath(context.path.join('.'));
    if (value === undefined) {
      return italic("None");
    }
    
    return value ? 'Allowed' : "Disallowed";
  }
  
  private getPermissionBooleanBuilder(context: FieldMenuItemContext) {
    return new StringSelectMenuBuilder()
      .setOptions(
        [
          {
            label: "Allow",
            value: "1"
          },
          {
            label: "Disallow",
            value: "0"
          }
        ]
      )
  }
  
  private getStringValue(context: FieldMenuItemContext): string {
    const value = this.configuration.getConfigurationByPath(context.path.join('.'));
    if (!value) {
      return "";
    }
    
    if (typeof value !== 'string') {
      throw new TypeError(`Value of type ${typeof value} can't be used for a string value!`)
    }
    
    return value;
  }
  
  private getStringBuilder(context: FieldMenuItemContext): TextInputBuilder {
    return new TextInputBuilder()
      .setStyle(TextInputStyle.Short)
      .setMaxLength(100)
  }
  private getTextareaBuilder(context: FieldMenuItemContext): TextInputBuilder {
    return new TextInputBuilder()
      .setStyle(TextInputStyle.Paragraph)
      .setMaxLength(2048)
  }
  
  
  private setValue(value: FieldMenuItemSaveValue[]|string, context: FieldMenuItemContext): void {
    const savedValue = typeof value !== 'string' ?
      value.join('; ') :
      value;
      
    this.configuration.saveConfiguration(context.path.join('.'), savedValue);
  }
}