import { api, ApiError } from "./client";
import type { AgentSkillEntry } from "./skillRegistry";

export type SkillGroupRow = {
  id: string;
  name: string;
  description: string | null;
  isBuiltin: number;
  createdAt: number;
  updatedAt: number;
};

export type GroupMemberRow = {
  groupId: string;
  skillId: string;
  addedAt: number;
};

export type AssignResult = {
  installed: string[];
  skipped: string[];
  pendingPlugin: string[];
};

export type GroupExport = {
  version: "1";
  group: {
    id: string;
    name: string;
    description: string | null;
    members: string[];
    parents: string[];
  };
};

export const skillGroupsApi = {
  listGroups: () => api.get<SkillGroupRow[]>("/skill-registry/groups"),

  getGroup: (groupId: string) =>
    api.get<SkillGroupRow>(`/skill-registry/groups/${groupId}`),

  createGroup: (input: { name: string; description?: string }) =>
    api.post<SkillGroupRow>("/skill-registry/groups", input),

  updateGroup: (groupId: string, patch: { name?: string; description?: string }) =>
    api.patch<SkillGroupRow>(`/skill-registry/groups/${groupId}`, patch),

  deleteGroup: (groupId: string) =>
    api.delete<void>(`/skill-registry/groups/${groupId}`),

  listMembers: (groupId: string) =>
    api.get<GroupMemberRow[]>(`/skill-registry/groups/${groupId}/members`),

  addMember: (groupId: string, skillId: string) =>
    api.post<{ ok: boolean }>(`/skill-registry/groups/${groupId}/members`, { skillId }),

  removeMember: (groupId: string, skillId: string) =>
    api.delete<void>(`/skill-registry/groups/${groupId}/members/${skillId}`),

  exportGroup: (groupId: string) =>
    api.get<GroupExport>(`/skill-registry/groups/${groupId}/export`),

  importGroup: (data: GroupExport) =>
    api.post<SkillGroupRow>("/skill-registry/groups/import", data),

  listAgentGroups: (agentId: string) =>
    api.get<SkillGroupRow[]>(`/skill-registry/agents/${agentId}/groups`),

  assignGroup: (agentId: string, groupId: string) =>
    api.post<AssignResult>(`/skill-registry/agents/${agentId}/groups`, {
      groupId,
    }),

  removeGroup: async (agentId: string, groupId: string): Promise<void> => {
    const res = await fetch(`/api/skill-registry/agents/${agentId}/groups/${groupId}`, {
      method: "DELETE",
      credentials: "include",
    });
    if (!res.ok && res.status !== 204) {
      const errorBody = await res.json().catch(() => null);
      throw new ApiError(
        (errorBody as { error?: string } | null)?.error ?? `Request failed: ${res.status}`,
        res.status,
        errorBody,
      );
    }
  },

  listAgentSkills: (agentId: string) =>
    api.get<AgentSkillEntry[]>(`/skill-registry/agents/${agentId}/skills`),
};