import { inject, Injectable } from '@angular/core';
import {
  CommandResult,
  CreateSprintInput,
  Sprint,
  SprintBurndown,
  SprintsGateway,
  UpdateSprintInput,
} from '@task-stream/web/tracker/domain';
import { map, Observable } from 'rxjs';
import {
  CloseSprintDocument,
  CreateSprintDocument,
  DeleteSprintDocument,
  SetIssueSprintDocument,
  SprintBurndownDocument,
  SprintsDocument,
  StartSprintDocument,
  UpdateSprintDocument,
} from '../graphql/generated';
import { GraphqlOperations } from './graphql-operations';
import { toCommandResult } from './mappers';

@Injectable()
export class GraphqlSprintsGateway extends SprintsGateway {
  private readonly gql = inject(GraphqlOperations);

  list(projectId: string): Observable<Sprint[]> {
    return this.gql
      .query(SprintsDocument, { projectId })
      .pipe(map((d) => d.sprints as Sprint[]));
  }

  burndown(sprintId: string): Observable<SprintBurndown> {
    return this.gql
      .query(SprintBurndownDocument, { id: sprintId })
      .pipe(map((d) => d.sprint.burndown));
  }

  create(input: CreateSprintInput): Observable<CommandResult> {
    return this.gql
      .mutate(CreateSprintDocument, { input })
      .pipe(map((d) => toCommandResult(d.createSprint)));
  }

  update(input: UpdateSprintInput): Observable<CommandResult> {
    return this.gql
      .mutate(UpdateSprintDocument, { input })
      .pipe(map((d) => toCommandResult(d.updateSprint)));
  }

  start(sprintId: string): Observable<CommandResult> {
    return this.gql
      .mutate(StartSprintDocument, { sprintId })
      .pipe(map((d) => toCommandResult(d.startSprint)));
  }

  close(
    sprintId: string,
    carryOverTo: string | null,
  ): Observable<CommandResult> {
    return this.gql
      .mutate(CloseSprintDocument, {
        sprintId,
        carryOverToSprintId: carryOverTo,
      })
      .pipe(map((d) => toCommandResult(d.closeSprint)));
  }

  remove(sprintId: string): Observable<CommandResult> {
    return this.gql
      .mutate(DeleteSprintDocument, { sprintId })
      .pipe(map((d) => toCommandResult(d.deleteSprint)));
  }

  setIssueSprint(
    issueId: string,
    sprintId: string | null,
  ): Observable<CommandResult> {
    return this.gql
      .mutate(SetIssueSprintDocument, { issueId, sprintId })
      .pipe(map((d) => toCommandResult(d.setIssueSprint)));
  }
}