import { ApiProjectMemberRecord, ApiProjectMemberRole } from '../api/projectMembers';
import { ProjectMember, ProjectMemberRole } from '../types/workbench';
import { memberRoleFromDocumentDuty } from './projectDocumentDuty';

/** UI 角色 → 服务端 project_role（禁止 author/reviewer/approver）。 */
export function toApiProjectRole(
  role: ProjectMemberRole,
  userId: number,
  creatorId: number
): ApiProjectMemberRole {
  if (role === 'creator' || role === 'owner' || (userId === creatorId && role !== 'viewer')) {
    return 'owner';
  }
  if (role === 'viewer') {
    return 'viewer';
  }
  return 'member';
}

/** 服务端 project_role → UI 角色。 */
export function fromApiProjectRole(
  apiRole: string,
  userId: number,
  creatorId: number
): ProjectMemberRole {
  const normalized = apiRole.trim().toLowerCase();
  if (normalized === 'owner') {
    return userId === creatorId ? 'creator' : 'owner';
  }
  if (normalized === 'viewer') {
    return 'viewer';
  }
  return 'member';
}

export function mapApiMemberToProjectMember(
  rec: ApiProjectMemberRecord,
  creatorId: number
): ProjectMember {
  return {
    userId: rec.user_id,
    userName: rec.name?.trim() || rec.username?.trim() || `用户 #${rec.user_id}`,
    role: memberRoleFromDocumentDuty(
      rec.document_duty,
      fromApiProjectRole(rec.project_role, rec.user_id, creatorId),
    ),
    status: rec.status === 'exited' ? 'exited' : 'active',
    joinedAt: rec.joined_at || new Date().toLocaleString(),
    exitedAt: rec.status === 'exited' ? rec.joined_at : undefined,
  };
}

export function mapApiMembersToProjectMembers(
  records: ApiProjectMemberRecord[],
  creatorId: number
): ProjectMember[] {
  return records.map((rec) => mapApiMemberToProjectMember(rec, creatorId));
}

/** 项目成员管理可选角色（与后端校验一致）。 */
export const ASSIGNABLE_PROJECT_MEMBER_ROLES: ProjectMemberRole[] = ['member', 'viewer'];