import {
  Body,
  Controller,
  Get,
  HttpCode,
  Param,
  Patch,
  Post,
  Query,
} from '@nestjs/common';
import {
  ApiCreatedResponse,
  ApiOkResponse,
  ApiOperation,
  ApiParam,
  ApiTags,
} from '@nestjs/swagger';
import { User } from '@task-stream/api/identity/domain';
import {
  ApiOptionalPireonAuth,
  ApiPireonAuth,
  CurrentUser,
} from '@task-stream/api/identity/presenters';
import {
  ApiCommandErrors,
  ApiReadErrors,
} from '@task-stream/api/shared/presenters';
import {
  IssuesService,
  ProjectsService,
  ReleasesService,
} from '@task-stream/api/tracker/application';
import {
  CreateReleaseDto,
  PageQueryDto,
  PublishReleaseDto,
  UpcomingReleasesQueryDto,
  UpdateReleaseDto,
} from './dto/requests.dto';
import {
  CommandResultDto,
  IssuePageDto,
  ReleaseDto,
  ReleaseBurnupDto,
  ReleaseProgressDto,
} from './dto/responses.dto';
import { viewerOf } from '../common/viewer';
import { Refs } from './refs';

const PROJECT = ApiParam({
  name: 'project',
  description: 'Project id or key',
  example: 'WEB',
});

/** REST adapter of the release use cases: versions that group tickets. */
@ApiTags('Releases')
@ApiPireonAuth()
@Controller()
export class ReleasesController {
  constructor(
    private readonly releases: ReleasesService,
    private readonly projects: ProjectsService,
    private readonly issues: IssuesService,
    private readonly refs: Refs,
  ) {}

  @Get('me/releases')
  @ApiOperation({
    summary: 'Planned releases of all my projects, soonest target date first',
  })
  @ApiOkResponse({ type: [ReleaseDto] })
  @ApiReadErrors()
  upcoming(@CurrentUser() me: User, @Query() query: UpcomingReleasesQueryDto) {
    return this.releases.upcoming(me.id, query.limit);
  }

  @Get('projects/:project/releases')
  @ApiOptionalPireonAuth()
  @PROJECT
  @ApiOperation({ summary: 'Releases of a project' })
  @ApiOkResponse({ type: [ReleaseDto] })
  @ApiReadErrors()
  async list(
    @CurrentUser() me: User | undefined,
    @Param('project') project: string,
  ) {
    return this.projects.releases(
      viewerOf(me),
      await this.refs.projectId(viewerOf(me), project),
    );
  }

  @Post('projects/:project/releases')
  @PROJECT
  @ApiOperation({ summary: 'Plan a release (owner/admin)' })
  @ApiCreatedResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  async create(
    @CurrentUser() me: User,
    @Param('project') project: string,
    @Body() body: CreateReleaseDto,
  ) {
    return this.releases.create(me.id, {
      ...body,
      projectId: await this.refs.projectId(me.id, project),
    });
  }

  @Get('releases/:releaseId')
  @ApiOptionalPireonAuth()
  @ApiOperation({ summary: 'A release' })
  @ApiOkResponse({ type: ReleaseDto })
  @ApiReadErrors()
  findOne(
    @CurrentUser() me: User | undefined,
    @Param('releaseId') releaseId: string,
  ) {
    return this.releases.findOne(viewerOf(me), releaseId);
  }

  @Patch('releases/:releaseId')
  @ApiOperation({ summary: 'Rename, describe or move the target date' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  update(
    @CurrentUser() me: User,
    @Param('releaseId') releaseId: string,
    @Body() body: UpdateReleaseDto,
  ) {
    return this.releases.update(me.id, releaseId, body);
  }

  @Get('releases/:releaseId/progress')
  @ApiOptionalPireonAuth()
  @ApiOperation({ summary: 'Finished tickets out of the total' })
  @ApiOkResponse({ type: ReleaseProgressDto })
  @ApiReadErrors()
  progress(
    @CurrentUser() me: User | undefined,
    @Param('releaseId') releaseId: string,
  ) {
    return this.releases.progress(viewerOf(me), releaseId);
  }

  @Get('releases/:releaseId/burnup')
  @ApiOptionalPireonAuth()
  @ApiOperation({
    summary: 'Burnup: tickets in the release and finished ones, day by day',
  })
  @ApiOkResponse({ type: ReleaseBurnupDto })
  @ApiReadErrors()
  burnup(
    @CurrentUser() me: User | undefined,
    @Param('releaseId') releaseId: string,
  ) {
    return this.releases.burnup(viewerOf(me), releaseId);
  }

  @Get('releases/:releaseId/issues')
  @ApiOptionalPireonAuth()
  @ApiOperation({ summary: 'Tickets included in the release' })
  @ApiOkResponse({ type: IssuePageDto })
  @ApiReadErrors()
  async issuesOf(
    @CurrentUser() me: User | undefined,
    @Param('releaseId') releaseId: string,
    @Query() page: PageQueryDto,
  ) {
    const release = await this.releases.findOne(viewerOf(me), releaseId);
    const found = await this.issues.search(viewerOf(me), {
      projectId: release.projectId,
      releaseId: release.id,
      limit: page.limit,
      offset: page.offset,
    });
    return { ...found, items: await this.refs.issueDtos(found.items) };
  }

  @Post('releases/:releaseId/publish')
  @HttpCode(200)
  @ApiOperation({
    summary: 'Ship the release',
    description:
      'Fails (422) while it has unfinished tickets unless `force` is true.',
  })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  publish(
    @CurrentUser() me: User,
    @Param('releaseId') releaseId: string,
    @Body() body: PublishReleaseDto,
  ) {
    return this.releases.publish(me.id, releaseId, body.force);
  }

  @Post('releases/:releaseId/archive')
  @HttpCode(200)
  @ApiOperation({ summary: 'Archive a planned release (its tickets leave it)' })
  @ApiOkResponse({ type: CommandResultDto })
  @ApiCommandErrors()
  archive(@CurrentUser() me: User, @Param('releaseId') releaseId: string) {
    return this.releases.archive(me.id, releaseId);
  }
}