import {
  Body,
  Controller,
  Delete,
  HttpCode,
  Param,
  Patch,
  Post,
  Put,
} from '@nestjs/common';
import { ApiOkResponse, ApiOperation, ApiTags } from '@nestjs/swagger';
import { User } from '@task-stream/api/identity/domain';
import {
  ApiPireonAuth,
  CurrentUser,
} from '@task-stream/api/identity/presenters';
import { ApiCommandErrors } from '@task-stream/api/shared/presenters';
import { CommentsService } from '@task-stream/api/tracker/application';
import { REACTIONS } from '@task-stream/api/tracker/domain';
import {
  CommentBodyDto,
  ClosePollDto,
  ReactToCommentDto,
  ResolveThreadDto,
  TurnCommentIntoIssueDto,
  VotePollDto,
} from './dto/requests.dto';
import { CommandResultDto } from './dto/responses.dto';

/** REST adapter of the comment use cases (listing and adding live under /issues). */
@ApiTags('Comments')
@ApiPireonAuth()
@Controller('comments')
export class CommentsController {
  constructor(private readonly comments: CommentsService) {}

  @Patch(':commentId')
  @ApiOperation({ summary: 'Edit a comment (author only)' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  edit(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: CommentBodyDto,
  ) {
    return this.comments.edit(me.id, commentId, body.body);
  }

  @Post(':commentId/reactions')
  @HttpCode(200)
  @ApiOperation({
    summary: 'React to a comment, or take the reaction back (members)',
    description: `One of ${REACTIONS.join(' ')}; repeating it changes nothing.`,
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  react(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: ReactToCommentDto,
  ) {
    return this.comments.react(me.id, commentId, body.emoji, body.on);
  }

  @Put(':commentId/decision')
  @ApiOperation({
    summary: 'Mark a comment as a decision of its ticket',
    description:
      'Whoever can change the ticket. Decisions are shown above the ticket and searchable (GET …/decisions).',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  markDecision(@CurrentUser() me: User, @Param('commentId') commentId: string) {
    return this.comments.markDecision(me.id, commentId, true);
  }

  @Delete(':commentId/decision')
  @ApiOperation({ summary: 'It is no longer a decision' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  unmarkDecision(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
  ) {
    return this.comments.markDecision(me.id, commentId, false);
  }

  @Post(':commentId/poll/vote')
  @HttpCode(200)
  @ApiOperation({
    summary: "Vote in a comment's poll (members, viewers too)",
    description: 'option: its index; null takes the vote back.',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  votePoll(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: VotePollDto,
  ) {
    return this.comments.votePoll(me.id, commentId, body.option);
  }

  @Post(':commentId/poll/close')
  @HttpCode(200)
  @ApiOperation({
    summary: 'Close a poll (whoever started it, or an admin)',
    description:
      'With decide (default), the winner stays as a decision of the ticket.',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  closePoll(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: ClosePollDto,
  ) {
    return this.comments.closePoll(me.id, commentId, body.decide ?? true);
  }

  @Post(':commentId/issue')
  @ApiOperation({
    summary: 'Make a ticket of a comment',
    description:
      'Its text becomes the description, as a subtask of its ticket or linked to it (RELATES_TO); the comment shows where it went. Answers the new ticket. Whoever can change tickets.',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  turnIntoIssue(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: TurnCommentIntoIssueDto,
  ) {
    return this.comments.turnIntoIssue(
      me.id,
      commentId,
      body.title,
      body.type,
      body.asSubtask ?? false,
    );
  }

  @Put(':commentId/resolution')
  @ApiOperation({
    summary: 'Settle a conversation (a top-level comment and its replies)',
    description:
      'Whoever can change the ticket. A conclusion is added as a reply marked as a decision. The web folds a settled conversation.',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  resolveThread(
    @CurrentUser() me: User,
    @Param('commentId') commentId: string,
    @Body() body: ResolveThreadDto,
  ) {
    return this.comments.resolveThread(
      me.id,
      commentId,
      true,
      body.conclusion ?? null,
    );
  }

  @Delete(':commentId/resolution')
  @ApiOperation({ summary: 'Reopen a conversation' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  reopenThread(@CurrentUser() me: User, @Param('commentId') commentId: string) {
    return this.comments.resolveThread(me.id, commentId, false);
  }

  @Delete(':commentId')
  @ApiOperation({ summary: 'Delete a comment (author or project admin)' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  delete(@CurrentUser() me: User, @Param('commentId') commentId: string) {
    return this.comments.delete(me.id, commentId);
  }
}