import type {
  AccessDecisionProvenanceItem as CoreAccessDecisionProvenanceItem,
  ApiSettings,
  DeltaDeletedItem,
  PrivacyRetentionPolicy,
  ResourceAccessExplanationOptions,
  ResourceAccessExplanationResponse as CoreResourceAccessExplanationResponse,
  TenantAdminItem
} from "@govoplan/core-webui";
import { apiFetch, apiGetList, apiPath, apiQuery, fetchResourceAccessExplanation as fetchCoreResourceAccessExplanation } from "@govoplan/core-webui";
export { fetchAdminOverview, fetchPermissionCatalog, fetchTenants } from "@govoplan/core-webui";
export type {
  AdminOverview,
  PrivacyRetentionLimitPermissionPatch,
  PrivacyRetentionLimitPermissions,
  PrivacyRetentionPolicy,
  PrivacyRetentionPolicyFieldKey,
  PrivacyRetentionPolicyPatch,
  PermissionItem,
  TenantAdminItem
} from "@govoplan/core-webui";

export type TenantOwnerCandidate = {
  account_id: string;
  email: string;
  display_name?: string | null;
};

export type RoleSummary = {
  id: string;
  slug: string;
  name: string;
  description?: string | null;
  permissions: string[];
  effective_permission_count: number;
  is_builtin: boolean;
  is_assignable: boolean;
  user_assignments: number;
  group_assignments: number;
  level: "tenant" | "system";
  system_template_id?: string | null;
  system_required?: boolean;
};

export type GroupSummary = {
  id: string;
  slug: string;
  name: string;
  description?: string | null;
  is_active: boolean;
  member_count: number;
  member_ids: string[];
  roles: RoleSummary[];
  created_at: string;
  updated_at: string;
  system_template_id?: string | null;
  system_required?: boolean;
};

export type UserAdminItem = {
  id: string;
  account_id: string;
  tenant_id: string;
  email: string;
  display_name?: string | null;
  is_active: boolean;
  account_is_active: boolean;
  password_reset_required: boolean;
  last_login_at?: string | null;
  groups: GroupSummary[];
  roles: RoleSummary[];
  function_assignment_ids: string[];
  function_delegation_ids: string[];
  effective_scopes: string[];
  is_owner: boolean;
  is_last_active_owner: boolean;
  created_at: string;
  updated_at: string;
};

export type AccessRoleSourceType = "direct_role" | "group_role" | "legacy_function_role" | "idm_function_role" | "system_role";

export type AccessRoleSourceItem = {
  source_type: AccessRoleSourceType;
  role_id: string;
  role_slug: string;
  role_name: string;
  permissions: string[];
  tenant_id?: string | null;
  group_id?: string | null;
  group_name?: string | null;
  function_assignment_id?: string | null;
  function_id?: string | null;
  function_name?: string | null;
  organization_unit_id?: string | null;
  organization_unit_name?: string | null;
  identity_id?: string | null;
  account_id?: string | null;
  source_module?: string | null;
  assignment_source?: string | null;
  applies_to_subunits: boolean;
  delegated_from_assignment_id?: string | null;
  delegation_id?: string | null;
  acting_for_account_id?: string | null;
};

export type AccessScopeExplanationItem = {
  scope: string;
  sources: AccessRoleSourceItem[];
};

export type AccessDecisionProvenanceItem = Omit<CoreAccessDecisionProvenanceItem, "details"> & {
  details: Record<string, unknown>;
};

export type FunctionFactExplanationItem = {
  source_module: string;
  assignment_id: string;
  tenant_id: string;
  identity_id?: string | null;
  account_id?: string | null;
  function_id: string;
  function_name?: string | null;
  organization_unit_id: string;
  organization_unit_name?: string | null;
  applies_to_subunits: boolean;
  assignment_source: string;
  status: string;
  delegated_from_assignment_id?: string | null;
  acting_for_account_id?: string | null;
  role_ids: string[];
  role_names: string[];
};

export type UserAccessExplanationResponse = {
  user: UserAdminItem;
  role_sources: AccessRoleSourceItem[];
  scopes: AccessScopeExplanationItem[];
  function_facts: FunctionFactExplanationItem[];
};

export type ResourceAccessExplanationResponse = CoreResourceAccessExplanationResponse<UserAdminItem, AccessDecisionProvenanceItem>;

export type SystemAccountItem = {
  account_id: string;
  email: string;
  display_name?: string | null;
  is_active: boolean;
  memberships: Array<{ tenant_id: string; tenant_name: string; user_id: string; is_active: boolean; role_ids: string[]; group_ids: string[]; is_owner: boolean; is_last_active_owner: boolean }>;
  roles: RoleSummary[];
  last_login_at?: string | null;
};


export type SystemMembershipDraft = {
  tenant_id: string;
  is_active: boolean;
  role_ids: string[];
  group_ids: string[];
  is_owner?: boolean;
  is_last_active_owner?: boolean;
};

export type SystemSettingsItem = {
  default_locale: string;
  allow_tenant_custom_groups: boolean;
  allow_tenant_custom_roles: boolean;
  allow_tenant_api_keys: boolean;
  privacy_retention_policy: PrivacyRetentionPolicy;
  available_languages?: LanguagePackage[];
  enabled_language_codes?: string[];
  settings: Record<string, unknown>;
};

export type LanguagePackage = {
  code: string;
  label: string;
  native_label?: string | null;
};

export type TenantSettingsItem = {
  id: string;
  slug: string;
  name: string;
  default_locale: string;
  available_languages: LanguagePackage[];
  system_enabled_language_codes: string[];
  enabled_language_codes: string[];
  settings: Record<string, unknown>;
};

export type TenantSettingsDeltaSections = Partial<{
  identity: Pick<TenantSettingsItem, "id" | "slug" | "name">;
  locale: Pick<TenantSettingsItem, "default_locale">;
  languages: Pick<TenantSettingsItem, "available_languages" | "system_enabled_language_codes" | "enabled_language_codes">;
  settings: Pick<TenantSettingsItem, "settings">["settings"];
}>;

export type GovernanceAssignment = {
  tenant_id: string;
  mode: "available" | "required";
};

export type GovernanceTemplateItem = {
  id: string;
  kind: "group" | "role";
  slug: string;
  name: string;
  description?: string | null;
  permissions: string[];
  effective_permission_count: number;
  is_active: boolean;
  assignments: GovernanceAssignment[];
  created_at: string;
  updated_at: string;
};

export type ApiKeyAdminItem = {
  id: string;
  user_id: string;
  user_email: string;
  name: string;
  prefix: string;
  scopes: string[];
  expires_at?: string | null;
  last_used_at?: string | null;
  revoked_at?: string | null;
  created_at: string;
};

export type ExternalFunctionRoleMappingItem = {
  id: string;
  tenant_id: string;
  source_module: string;
  function_id: string;
  role_id: string;
  settings: Record<string, unknown>;
  created_at: string;
  updated_at: string;
};

type DeltaResponseFields = {
  deleted: DeltaDeletedItem[];
  watermark?: string | null;
  has_more: boolean;
  full: boolean;
};

export type UserListDeltaResponse = { users: UserAdminItem[] } & DeltaResponseFields;
export type GroupListDeltaResponse = { groups: GroupSummary[] } & DeltaResponseFields;
export type RoleListDeltaResponse = { roles: RoleSummary[] } & DeltaResponseFields;
export type SystemAccountListDeltaResponse = { accounts: SystemAccountItem[]; roles: RoleSummary[] } & DeltaResponseFields;
export type ApiKeyListDeltaResponse = { api_keys: ApiKeyAdminItem[] } & DeltaResponseFields;
export type TenantListDeltaResponse = { tenants: TenantAdminItem[] } & DeltaResponseFields;
export type GovernanceTemplateListDeltaResponse = { templates: GovernanceTemplateItem[] } & DeltaResponseFields;
export type ExternalFunctionRoleMappingListDeltaResponse = { mappings: ExternalFunctionRoleMappingItem[] } & DeltaResponseFields;
export type TenantSettingsDeltaResponse = {
  item?: TenantSettingsItem | null;
  sections: TenantSettingsDeltaSections;
  changed_sections: string[];
} & DeltaResponseFields;

function deltaSuffix(options: { since?: string | null; limit?: number } = {}): string {
  return apiQuery(options);
}



export function fetchTenantsDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<TenantListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/tenants/delta${suffix}`);
}

export async function fetchTenantOwnerCandidates(settings: ApiSettings): Promise<TenantOwnerCandidate[]> {
  return apiGetList<TenantOwnerCandidate, "accounts">(settings, "/api/v1/admin/tenants/owner-candidates", "accounts");
}

export function createTenant(settings: ApiSettings, payload: {
  slug: string;
  name: string;
  owner_account_id?: string | null;
  description?: string | null;
  default_locale?: string;
  settings?: Record<string, unknown>;
  allow_custom_groups?: boolean | null;
  allow_custom_roles?: boolean | null;
  allow_api_keys?: boolean | null;
}): Promise<TenantAdminItem> {
  return apiFetch(settings, "/api/v1/admin/tenants", { method: "POST", body: JSON.stringify(payload) });
}

export function updateTenant(settings: ApiSettings, tenantId: string, payload: Partial<{
  name: string;
  description: string | null;
  default_locale: string;
  settings: Record<string, unknown>;
  allow_custom_groups?: boolean | null;
  allow_custom_roles?: boolean | null;
  allow_api_keys?: boolean | null;
  effective_governance: Record<string, boolean>;
  is_active: boolean;
}>): Promise<TenantAdminItem> {
  return apiFetch(settings, `/api/v1/admin/tenants/${tenantId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function fetchTenantSettings(settings: ApiSettings): Promise<TenantSettingsItem> {
  return apiFetch(settings, "/api/v1/admin/tenant/settings");
}

export function fetchTenantSettingsDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<TenantSettingsDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/tenant/settings/delta${suffix}`);
}

export function updateTenantSettings(settings: ApiSettings, payload: { default_locale: string; enabled_language_codes?: string[] | null }): Promise<TenantSettingsItem> {
  return apiFetch(settings, "/api/v1/admin/tenant/settings", { method: "PATCH", body: JSON.stringify(payload) });
}

export async function fetchUsers(settings: ApiSettings): Promise<UserAdminItem[]> {
  const response = await apiFetch<{ users: UserAdminItem[] }>(settings, "/api/v1/admin/users");
  return response.users;
}

export function fetchUsersDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<UserListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/users/delta${suffix}`);
}

export function createUser(settings: ApiSettings, payload: {
  email: string;
  display_name?: string | null;
  password?: string | null;
  password_reset_required?: boolean;
  is_active?: boolean;
  group_ids?: string[];
  role_ids?: string[];
}): Promise<{ user: UserAdminItem; account_created: boolean; temporary_password?: string | null }> {
  return apiFetch(settings, "/api/v1/admin/users", { method: "POST", body: JSON.stringify(payload) });
}

export function updateUser(settings: ApiSettings, userId: string, payload: Partial<{
  display_name: string | null;
  is_active: boolean;
  group_ids: string[];
  role_ids: string[];
}>): Promise<UserAdminItem> {
  return apiFetch(settings, `/api/v1/admin/users/${userId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function fetchUserAccessExplanation(settings: ApiSettings, userId: string): Promise<UserAccessExplanationResponse> {
  return apiFetch(settings, `/api/v1/admin/users/${userId}/access-explanation`);
}

export function fetchResourceAccessExplanation(
  settings: ApiSettings,
  options: ResourceAccessExplanationOptions
): Promise<ResourceAccessExplanationResponse> {
  return fetchCoreResourceAccessExplanation<UserAdminItem, AccessDecisionProvenanceItem>(settings, options);
}

export async function fetchGroups(settings: ApiSettings): Promise<GroupSummary[]> {
  return apiGetList<GroupSummary, "groups">(settings, "/api/v1/admin/groups", "groups");
}

export function fetchGroupsDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<GroupListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/groups/delta${suffix}`);
}

export function createGroup(settings: ApiSettings, payload: {
  slug: string;
  name: string;
  description?: string | null;
  is_active?: boolean;
  member_ids?: string[];
  role_ids?: string[];
}): Promise<GroupSummary> {
  return apiFetch(settings, "/api/v1/admin/groups", { method: "POST", body: JSON.stringify(payload) });
}

export function updateGroup(settings: ApiSettings, groupId: string, payload: Partial<{
  name: string;
  description: string | null;
  is_active: boolean;
  member_ids: string[];
  role_ids: string[];
}>): Promise<GroupSummary> {
  return apiFetch(settings, `/api/v1/admin/groups/${groupId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export async function fetchRoles(settings: ApiSettings): Promise<RoleSummary[]> {
  return apiGetList<RoleSummary, "roles">(settings, "/api/v1/admin/roles", "roles");
}

export function fetchRolesDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<RoleListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/roles/delta${suffix}`);
}

export function createRole(settings: ApiSettings, payload: {
  slug: string;
  name: string;
  description?: string | null;
  permissions: string[];
}): Promise<RoleSummary> {
  return apiFetch(settings, "/api/v1/admin/roles", { method: "POST", body: JSON.stringify(payload) });
}

export function updateRole(settings: ApiSettings, roleId: string, payload: {
  name: string;
  description?: string | null;
  permissions: string[];
  is_assignable: boolean;
}): Promise<RoleSummary> {
  return apiFetch(settings, `/api/v1/admin/roles/${roleId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function deleteRole(settings: ApiSettings, roleId: string): Promise<void> {
  return apiFetch(settings, `/api/v1/admin/roles/${roleId}`, { method: "DELETE" });
}

export function fetchExternalFunctionRoleMappingsDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<ExternalFunctionRoleMappingListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/external-function-role-mappings/delta${suffix}`);
}

export function createExternalFunctionRoleMapping(settings: ApiSettings, payload: {
  source_module: string;
  function_id: string;
  role_id: string;
  settings?: Record<string, unknown>;
}): Promise<ExternalFunctionRoleMappingItem> {
  return apiFetch(settings, "/api/v1/admin/external-function-role-mappings", { method: "POST", body: JSON.stringify(payload) });
}

export function updateExternalFunctionRoleMapping(settings: ApiSettings, mappingId: string, payload: {
  role_id?: string;
  settings?: Record<string, unknown>;
}): Promise<ExternalFunctionRoleMappingItem> {
  return apiFetch(settings, `/api/v1/admin/external-function-role-mappings/${mappingId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function deleteExternalFunctionRoleMapping(settings: ApiSettings, mappingId: string): Promise<void> {
  return apiFetch(settings, `/api/v1/admin/external-function-role-mappings/${mappingId}`, { method: "DELETE" });
}

export async function fetchSystemRoles(settings: ApiSettings): Promise<RoleSummary[]> {
  return apiGetList<RoleSummary, "roles">(settings, "/api/v1/admin/system/roles", "roles");
}

export function fetchSystemRolesDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<RoleListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/system/roles/delta${suffix}`);
}

export function createSystemRole(settings: ApiSettings, payload: {
  slug: string;
  name: string;
  description?: string | null;
  permissions: string[];
}): Promise<RoleSummary> {
  return apiFetch(settings, "/api/v1/admin/system/roles", { method: "POST", body: JSON.stringify(payload) });
}

export function updateSystemRole(settings: ApiSettings, roleId: string, payload: {
  name: string;
  description?: string | null;
  permissions: string[];
  is_assignable: boolean;
}): Promise<RoleSummary> {
  return apiFetch(settings, `/api/v1/admin/system/roles/${roleId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function deleteSystemRole(settings: ApiSettings, roleId: string): Promise<void> {
  return apiFetch(settings, `/api/v1/admin/system/roles/${roleId}`, { method: "DELETE" });
}

export async function fetchSystemAccounts(settings: ApiSettings): Promise<{ accounts: SystemAccountItem[]; roles: RoleSummary[] }> {
  return apiFetch(settings, "/api/v1/admin/system/accounts");
}

export function fetchSystemAccountsDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<SystemAccountListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/system/accounts/delta${suffix}`);
}

export function updateSystemAccount(settings: ApiSettings, accountId: string, payload: {
  display_name?: string | null;
  is_active?: boolean;
  role_ids?: string[];
}): Promise<SystemAccountItem> {
  return apiFetch(settings, `/api/v1/admin/system/accounts/${accountId}`, {
    method: "PATCH",
    body: JSON.stringify(payload)
  });
}

export function updateSystemAccountRoles(settings: ApiSettings, accountId: string, roleIds: string[]): Promise<SystemAccountItem> {
  return apiFetch(settings, `/api/v1/admin/system/accounts/${accountId}/roles`, {
    method: "PUT",
    body: JSON.stringify({ role_ids: roleIds })
  });
}

export async function fetchApiKeys(settings: ApiSettings, includeRevoked = false): Promise<ApiKeyAdminItem[]> {
  return apiGetList<ApiKeyAdminItem, "api_keys">(settings, "/api/v1/admin/api-keys", "api_keys", { include_revoked: includeRevoked ? true : undefined });
}

export function fetchApiKeysDelta(settings: ApiSettings, includeRevoked = false, options: { since?: string | null; limit?: number } = {}): Promise<ApiKeyListDeltaResponse> {
  return apiFetch(settings, apiPath("/api/v1/admin/api-keys/delta", {
    include_revoked: includeRevoked ? true : undefined,
    since: options.since,
    limit: options.limit
  }));
}

export function createApiKey(settings: ApiSettings, payload: {
  name: string;
  user_id?: string | null;
  scopes: string[];
  expires_at?: string | null;
}): Promise<ApiKeyAdminItem & { secret: string }> {
  return apiFetch(settings, "/api/v1/admin/api-keys", { method: "POST", body: JSON.stringify(payload) });
}

export function revokeApiKey(settings: ApiSettings, keyId: string): Promise<ApiKeyAdminItem> {
  return apiFetch(settings, `/api/v1/admin/api-keys/${keyId}/revoke`, { method: "POST" });
}

export function createSystemAccount(settings: ApiSettings, payload: {
  email: string;
  display_name?: string | null;
  password?: string | null;
  password_reset_required?: boolean;
  is_active?: boolean;
  role_ids?: string[];
  memberships?: SystemMembershipDraft[];
}): Promise<{ account: SystemAccountItem; temporary_password?: string | null }> {
  return apiFetch(settings, "/api/v1/admin/system/accounts", { method: "POST", body: JSON.stringify(payload) });
}

export function updateSystemMemberships(settings: ApiSettings, accountId: string, memberships: SystemMembershipDraft[]): Promise<SystemAccountItem> {
  return apiFetch(settings, `/api/v1/admin/system/accounts/${accountId}/memberships`, {
    method: "PUT", body: JSON.stringify({ memberships })
  });
}

export function fetchSystemSettings(settings: ApiSettings): Promise<SystemSettingsItem> {
  return apiFetch(settings, "/api/v1/admin/system/settings");
}

export type SystemSettingsUpdatePayload = {
  default_locale: string;
  allow_tenant_custom_groups: boolean;
  allow_tenant_custom_roles: boolean;
  allow_tenant_api_keys: boolean;
  privacy_retention_policy?: PrivacyRetentionPolicy | null;
  available_languages?: LanguagePackage[] | null;
  enabled_language_codes?: string[] | null;
};

export function updateSystemSettings(settings: ApiSettings, payload: SystemSettingsUpdatePayload): Promise<SystemSettingsItem> {
  return apiFetch(settings, "/api/v1/admin/system/settings", { method: "PATCH", body: JSON.stringify(payload) });
}

export async function fetchGovernanceTemplates(settings: ApiSettings, kind?: "group" | "role"): Promise<GovernanceTemplateItem[]> {
  return apiGetList<GovernanceTemplateItem, "templates">(settings, "/api/v1/admin/system/governance-templates", "templates", { kind });
}

export function fetchGovernanceTemplatesDelta(settings: ApiSettings, options: { since?: string | null; limit?: number } = {}): Promise<GovernanceTemplateListDeltaResponse> {
  const suffix = deltaSuffix(options);
  return apiFetch(settings, `/api/v1/admin/system/governance-templates/delta${suffix}`);
}

export function createGovernanceTemplate(settings: ApiSettings, payload: Omit<GovernanceTemplateItem, "id" | "created_at" | "updated_at" | "effective_permission_count">): Promise<GovernanceTemplateItem> {
  return apiFetch(settings, "/api/v1/admin/system/governance-templates", { method: "POST", body: JSON.stringify(payload) });
}

export function updateGovernanceTemplate(settings: ApiSettings, templateId: string, payload: Omit<GovernanceTemplateItem, "id" | "kind" | "slug" | "created_at" | "updated_at" | "effective_permission_count">): Promise<GovernanceTemplateItem> {
  return apiFetch(settings, `/api/v1/admin/system/governance-templates/${templateId}`, { method: "PATCH", body: JSON.stringify(payload) });
}

export function deleteGovernanceTemplate(settings: ApiSettings, templateId: string): Promise<void> {
  return apiFetch(settings, `/api/v1/admin/system/governance-templates/${templateId}`, { method: "DELETE" });
}