import type { JobResponse, RunEndpointResponse, ServerInstanceResponse, ServerMetricsResponse, UserContactProfile, UserStatus, UserThemePreferenceResponse } from "../api/types";

export type WorkspaceRole = "platformAdmin" | "serverOwner" | "serverAdmin";

export type WorkspaceCapability =
  | "profile.settings.manage"
  | "platform.overview.read"
  | "servers.read"
  | "servers.manage"
  | "plugins.market.read"
  | "users.manage"
  | "aiProviders.manage"
  | "system.maintenance";

export interface CurrentUserView {
  id: string;
  displayName: string;
  email?: string;
  status: UserStatus;
  roles: WorkspaceRole[];
  capabilities: WorkspaceCapability[];
  profile: UserContactProfile;
  themePreference?: UserThemePreferenceResponse;
  source: "api" | "local";
}

const roleCapabilities: Record<WorkspaceRole, WorkspaceCapability[]> = {
  platformAdmin: [
    "profile.settings.manage",
    "platform.overview.read",
    "servers.read",
    "servers.manage",
    "plugins.market.read",
    "users.manage",
    "aiProviders.manage",
    "system.maintenance"
  ],
  serverOwner: ["profile.settings.manage", "servers.read", "servers.manage"],
  serverAdmin: ["profile.settings.manage", "servers.read", "servers.manage"]
};

export function capabilitiesForRoles(roles: WorkspaceRole[]): WorkspaceCapability[] {
  const set = new Set<WorkspaceCapability>();
  for (const role of roles) {
    for (const capability of roleCapabilities[role] ?? []) {
      set.add(capability);
    }
  }
  return [...set];
}

export function isPlatformAdmin(user: CurrentUserView): boolean {
  return user.roles.includes("platformAdmin");
}

export function rolesFromBackendRoles(roles: string[]): WorkspaceRole[] {
  const mapped = new Set<WorkspaceRole>();
  for (const role of roles) {
    const normalized = role.toLowerCase();
    if (normalized === "admin" || normalized === "platform-admin" || normalized === "platformadmin") {
      mapped.add("platformAdmin");
    }
    if (normalized === "server-owner" || normalized === "owner") {
      mapped.add("serverOwner");
    }
    if (normalized === "server-admin" || normalized === "operator") {
      mapped.add("serverAdmin");
    }
  }
  return mapped.size > 0 ? [...mapped] : ["serverAdmin"];
}

export type OperationStatus = "pending" | "succeeded" | "failed";

export interface OperationRecord {
  id: string;
  intent: string;
  targetKind: "server" | "plugin" | "config" | "llm" | "platform";
  targetId: string;
  requester: string;
  status: OperationStatus;
  jobId?: string;
  jobState?: JobResponse["state"];
  message?: string;
  errorReason?: string;
  diagnosticId?: string;
  createdAt: string;
  updatedAt: string;
}

export interface ServerCardView {
	instance: ServerInstanceResponse;
	endpoint?: RunEndpointResponse;
	metrics?: ServerMetricsResponse;
  pendingJobs: number;
  activeJobs?: number;
  failedJobs?: number;
  latestJob?: JobResponse;
}

export type ServerStatusFilter = "all" | "online" | "offline" | "attention";

export function serverIsOnline(state: ServerInstanceResponse["state"]): boolean {
  return state === "running";
}

export function serverNeedsAttention(state: ServerInstanceResponse["state"]): boolean {
  return state === "failed" || state === "installing";
}

export function filterServerCards(cards: ServerCardView[], keyword: string, status: ServerStatusFilter): ServerCardView[] {
  const query = keyword.trim().toLowerCase();
  return cards.filter((card) => {
    if (query && !`${card.instance.name} ${card.instance.id} ${card.instance.pluginId}`.toLowerCase().includes(query)) {
      return false;
    }
    if (status === "online") {
      return serverIsOnline(card.instance.state);
    }
    if (status === "offline") {
      return !serverIsOnline(card.instance.state);
    }
    if (status === "attention") {
      return serverNeedsAttention(card.instance.state);
    }
    return true;
  });
}

export interface GameTypeDistributionEntry {
  serverType: string;
  label: string;
  count: number;
}

export interface PlatformOverviewSignal {
  id: string;
  kind: "log" | "fault" | "plugin" | "aiProvider" | "job";
  summary: string;
  detail: string;
  targetPage: "servers" | "plugins" | "aiProviders" | "maintenance";
  targetId?: string;
  tone: "info" | "warning" | "error";
  at: string;
}

export type ServerDetailSection = "manage" | "files" | "llm" | `plugin:${string}`;

export const serverDetailSections: Array<{ id: ServerDetailSection; label: string }> = [
  { id: "manage", label: "管理" },
  { id: "files", label: "文件" },
  { id: "llm", label: "AI 助手" }
];

export interface DiffLine {
  kind: "same" | "added" | "removed";
  text: string;
}

export interface ConfigDiffView {
  serverInstanceId: string;
	configVersion?: number;
	checksum?: string;
  key?: string;
  source?: string;
  summary: string;
  lines: DiffLine[];
  nextContent: string;
  proposedContentInputRef?: string;
}

export interface LlmSuggestionView {
  serverInstanceId: string;
  source: "api";
  recommendation: string;
  diffSummary?: string;
  executionStatus?: string;
  job?: JobResponse;
}