import { inject, injectable } from '@theia/core/shared/inversify';
import * as remote from '@theia/core/electron-shared/@electron/remote';
import { MenuModelRegistry } from '@theia/core/lib/common/menu';
import {
  DisposableCollection,
  Disposable,
} from '@theia/core/lib/common/disposable';
import { BoardsConfig } from '../boards/boards-config';
import { MainMenuManager } from '../../common/main-menu-manager';
import { BoardsListWidget } from '../boards/boards-list-widget';
import { NotificationCenter } from '../notification-center';
import { BoardsServiceProvider } from '../boards/boards-service-provider';
import {
  ArduinoMenus,
  PlaceholderMenuNode,
  unregisterSubmenu,
} from '../menu/arduino-menus';
import {
  BoardsService,
  InstalledBoardWithPackage,
  AvailablePorts,
  Port,
  getBoardInfo,
} from '../../common/protocol';
import { SketchContribution, Command, CommandRegistry } from './contribution';
import { nls } from '@theia/core/lib/common';

@injectable()
export class BoardSelection extends SketchContribution {
  @inject(CommandRegistry)
  protected readonly commandRegistry: CommandRegistry;

  @inject(MainMenuManager)
  protected readonly mainMenuManager: MainMenuManager;

  @inject(MenuModelRegistry)
  protected readonly menuModelRegistry: MenuModelRegistry;

  @inject(NotificationCenter)
  protected readonly notificationCenter: NotificationCenter;

  @inject(BoardsService)
  protected readonly boardsService: BoardsService;

  @inject(BoardsServiceProvider)
  protected readonly boardsServiceProvider: BoardsServiceProvider;

  protected readonly toDisposeBeforeMenuRebuild = new DisposableCollection();

  override registerCommands(registry: CommandRegistry): void {
    registry.registerCommand(BoardSelection.Commands.GET_BOARD_INFO, {
      execute: async () => {
        const boardInfo = await getBoardInfo(
          this.boardsServiceProvider.boardsConfig.selectedPort,
          this.boardsService.getState()
        );
        if (typeof boardInfo === 'string') {
          this.messageService.info(boardInfo);
          return;
        }
        const { BN, VID, PID, SN } = boardInfo;
        const detail = `
BN: ${BN}
VID: ${VID}
PID: ${PID}
SN: ${SN}
`.trim();
        await remote.dialog.showMessageBox(remote.getCurrentWindow(), {
          message: nls.localize('arduino/board/boardInfo', 'Board Info'),
          title: nls.localize('arduino/board/boardInfo', 'Board Info'),
          type: 'info',
          detail,
          buttons: [nls.localize('vscode/issueMainService/ok', 'OK')],
        });
      },
    });
  }

  override onStart(): void {
    this.notificationCenter.onPlatformDidInstall(() => this.updateMenus());
    this.notificationCenter.onPlatformDidUninstall(() => this.updateMenus());
    this.boardsServiceProvider.onBoardsConfigChanged(() => this.updateMenus());
    this.boardsServiceProvider.onAvailableBoardsChanged(() =>
      this.updateMenus()
    );
    this.boardsServiceProvider.onAvailablePortsChanged(() =>
      this.updateMenus()
    );
  }

  override async onReady(): Promise<void> {
    this.updateMenus();
  }

  protected async updateMenus(): Promise<void> {
    const [installedBoards, availablePorts, config] = await Promise.all([
      this.installedBoards(),
      this.boardsService.getState(),
      this.boardsServiceProvider.boardsConfig,
    ]);
    this.rebuildMenus(installedBoards, availablePorts, config);
  }

  protected rebuildMenus(
    installedBoards: InstalledBoardWithPackage[],
    availablePorts: AvailablePorts,
    config: BoardsConfig.Config
  ): void {
    this.toDisposeBeforeMenuRebuild.dispose();

    // Boards submenu
    const boardsSubmenuPath = [
      ...ArduinoMenus.TOOLS__BOARD_SELECTION_GROUP,
      '1_boards',
    ];
    const boardsSubmenuLabel = config.selectedBoard?.name;
    // Note: The submenu order starts from `100` because `Auto Format`, `Serial Monitor`, etc starts from `0` index.
    // The board specific items, and the rest, have order with `z`. We needed something between `0` and `z` with natural-order.
    this.menuModelRegistry.registerSubmenu(
      boardsSubmenuPath,
      nls.localize(
        'arduino/board/board',
        'Board{0}',
        !!boardsSubmenuLabel ? `: "${boardsSubmenuLabel}"` : ''
      ),
      { order: '100' }
    );
    this.toDisposeBeforeMenuRebuild.push(
      Disposable.create(() =>
        unregisterSubmenu(boardsSubmenuPath, this.menuModelRegistry)
      )
    );

    // Ports submenu
    const portsSubmenuPath = ArduinoMenus.TOOLS__PORTS_SUBMENU;
    const portsSubmenuLabel = config.selectedPort?.address;
    this.menuModelRegistry.registerSubmenu(
      portsSubmenuPath,
      nls.localize(
        'arduino/board/port',
        'Port{0}',
        portsSubmenuLabel ? `: "${portsSubmenuLabel}"` : ''
      ),
      { order: '101' }
    );
    this.toDisposeBeforeMenuRebuild.push(
      Disposable.create(() =>
        unregisterSubmenu(portsSubmenuPath, this.menuModelRegistry)
      )
    );

    const getBoardInfo = {
      commandId: BoardSelection.Commands.GET_BOARD_INFO.id,
      label: nls.localize('arduino/board/getBoardInfo', 'Get Board Info'),
      order: '103',
    };
    this.menuModelRegistry.registerMenuAction(
      ArduinoMenus.TOOLS__BOARD_SELECTION_GROUP,
      getBoardInfo
    );
    this.toDisposeBeforeMenuRebuild.push(
      Disposable.create(() =>
        this.menuModelRegistry.unregisterMenuAction(getBoardInfo)
      )
    );

    const boardsManagerGroup = [...boardsSubmenuPath, '0_manager'];
    const boardsPackagesGroup = [...boardsSubmenuPath, '1_packages'];

    this.menuModelRegistry.registerMenuAction(boardsManagerGroup, {
      commandId: `${BoardsListWidget.WIDGET_ID}:toggle`,
      label: `${BoardsListWidget.WIDGET_LABEL}...`,
    });

    // Installed boards
    installedBoards.forEach((board, index) => {
      const { packageId, packageName, fqbn, name, manuallyInstalled } = board;

      const packageLabel =
        packageName +
        `${
          manuallyInstalled
            ? nls.localize('arduino/board/inSketchbook', ' (in Sketchbook)')
            : ''
        }`;
      // Platform submenu
      const platformMenuPath = [...boardsPackagesGroup, packageId];
      // Note: Registering the same submenu twice is a noop. No need to group the boards per platform.
      this.menuModelRegistry.registerSubmenu(platformMenuPath, packageLabel, {
        order: packageName.toLowerCase(),
      });

      const id = `arduino-select-board--${fqbn}`;
      const command = { id };
      const handler = {
        execute: () => {
          if (
            fqbn !== this.boardsServiceProvider.boardsConfig.selectedBoard?.fqbn
          ) {
            this.boardsServiceProvider.boardsConfig = {
              selectedBoard: {
                name,
                fqbn,
                port: this.boardsServiceProvider.boardsConfig.selectedBoard
                  ?.port, // TODO: verify!
              },
              selectedPort:
                this.boardsServiceProvider.boardsConfig.selectedPort,
            };
          }
        },
        isToggled: () =>
          fqbn === this.boardsServiceProvider.boardsConfig.selectedBoard?.fqbn,
      };

      // Board menu
      const menuAction = {
        commandId: id,
        label: name,
        order: String(index).padStart(4), // pads with leading zeros for alphanumeric sort where order is 1, 2, 11, and NOT 1, 11, 2
      };
      this.commandRegistry.registerCommand(command, handler);
      this.toDisposeBeforeMenuRebuild.push(
        Disposable.create(() => this.commandRegistry.unregisterCommand(command))
      );
      this.menuModelRegistry.registerMenuAction(platformMenuPath, menuAction);
      // Note: we do not dispose the menu actions individually. Calling `unregisterSubmenu` on the parent will wipe the children menu nodes recursively.
    });

    // Installed ports
    const registerPorts = (
      protocol: string,
      protocolOrder: number,
      ports: AvailablePorts
    ) => {
      const portIDs = Object.keys(ports);
      if (!portIDs.length) {
        return;
      }

      // Register placeholder for protocol
      const menuPath = [
        ...portsSubmenuPath,
        `${protocolOrder.toString()}_${protocol}`,
      ];
      const placeholder = new PlaceholderMenuNode(
        menuPath,
        nls.localize(
          'arduino/board/typeOfPorts',
          '{0} ports',
          Port.Protocols.protocolLabel(protocol)
        ),
        { order: protocolOrder.toString().padStart(4) }
      );
      this.menuModelRegistry.registerMenuNode(menuPath, placeholder);
      this.toDisposeBeforeMenuRebuild.push(
        Disposable.create(() =>
          this.menuModelRegistry.unregisterMenuNode(placeholder.id)
        )
      );

      // First we show addresses with recognized boards connected,
      // then all the rest.
      const sortedIDs = Object.keys(ports).sort(
        (left: string, right: string): number => {
          const [, leftBoards] = ports[left];
          const [, rightBoards] = ports[right];
          return rightBoards.length - leftBoards.length;
        }
      );

      for (let i = 0; i < sortedIDs.length; i++) {
        const portID = sortedIDs[i];
        const [port, boards] = ports[portID];
        let label = `${port.addressLabel}`;
        if (boards.length) {
          const boardsList = boards.map((board) => board.name).join(', ');
          label = `${label} (${boardsList})`;
        }
        const id = `arduino-select-port--${portID}`;
        const command = { id };
        const handler = {
          execute: () => {
            if (
              !Port.sameAs(
                port,
                this.boardsServiceProvider.boardsConfig.selectedPort
              )
            ) {
              this.boardsServiceProvider.boardsConfig = {
                selectedBoard:
                  this.boardsServiceProvider.boardsConfig.selectedBoard,
                selectedPort: port,
              };
            }
          },
          isToggled: () =>
            Port.sameAs(
              port,
              this.boardsServiceProvider.boardsConfig.selectedPort
            ),
        };
        const menuAction = {
          commandId: id,
          label,
          order: String(protocolOrder + i + 1).padStart(4),
        };
        this.commandRegistry.registerCommand(command, handler);
        this.toDisposeBeforeMenuRebuild.push(
          Disposable.create(() =>
            this.commandRegistry.unregisterCommand(command)
          )
        );
        this.menuModelRegistry.registerMenuAction(menuPath, menuAction);
      }
    };

    const grouped = AvailablePorts.groupByProtocol(availablePorts);
    let protocolOrder = 100;
    // We first show serial and network ports, then all the rest
    ['serial', 'network'].forEach((protocol) => {
      const ports = grouped.get(protocol);
      if (ports) {
        registerPorts(protocol, protocolOrder, ports);
        grouped.delete(protocol);
        protocolOrder = protocolOrder + 100;
      }
    });
    grouped.forEach((ports, protocol) => {
      registerPorts(protocol, protocolOrder, ports);
      protocolOrder = protocolOrder + 100;
    });

    this.mainMenuManager.update();
  }

  protected async installedBoards(): Promise<InstalledBoardWithPackage[]> {
    const allBoards = await this.boardsService.getInstalledBoards();
    return allBoards.filter(InstalledBoardWithPackage.is);
  }
}
export namespace BoardSelection {
  export namespace Commands {
    export const GET_BOARD_INFO: Command = { id: 'arduino-get-board-info' };
  }
}