import type {
  GamePluginResponse,
  JobResponse,
  RunEndpointResponse,
  ServerInstanceResponse,
  ServerInstanceState
} from "../api/types";

export type ServerWorkflowViewState = "api" | "local" | "saving";
export type ServerLifecycleActionLabel = "create" | "start" | "stop" | "refresh";

export interface ServerCreateFormState {
  id: string;
  name: string;
  pluginId: string;
  runEndpointId: string;
}

export interface ServerWorkflowActionState {
  label: ServerLifecycleActionLabel;
  serverInstanceId?: string;
  success: boolean;
  message: string;
}

export interface ServerManagementSummary {
  total: number;
  running: number;
  pendingJobs: number;
  failed: number;
}

export const emptyServerCreateForm: ServerCreateFormState = {
  id: "",
  name: "",
  pluginId: "",
  runEndpointId: ""
};

export function summarizeServerManagement(instances: ServerInstanceResponse[], jobs: JobResponse[]): ServerManagementSummary {
  return {
    total: instances.length,
    running: instances.filter((instance) => instance.state === "running").length,
    pendingJobs: jobs.filter((job) => isPendingJobState(job.state)).length,
    failed: instances.filter((instance) => instance.state === "failed").length
  };
}

export function pendingJobsForServer(jobs: JobResponse[], serverInstanceId: string): JobResponse[] {
  return jobs.filter((job) => job.serverInstanceId === serverInstanceId && isPendingJobState(job.state));
}

export function pluginLabel(plugin: GamePluginResponse | undefined, pluginId: string): string {
  if (!plugin) {
    return pluginId;
  }
  return plugin.serverDisplayName || plugin.name || plugin.id;
}

export function endpointLabel(endpoint: RunEndpointResponse | undefined, runEndpointId: string): string {
  if (!endpoint) {
    return runEndpointId;
  }
  return endpoint.displayName || endpoint.id;
}

export function canStartServer(state: ServerInstanceState): boolean {
  return state === "ready" || state === "stopped";
}

export function canStopServer(state: ServerInstanceState): boolean {
  return state === "running";
}

export function isPendingJobState(state: JobResponse["state"]): boolean {
  return state === "queued" || state === "accepted" || state === "running";
}

export function defaultServerCreateForm(plugins: GamePluginResponse[], endpoints: RunEndpointResponse[]): ServerCreateFormState {
  return {
    ...emptyServerCreateForm,
    pluginId: plugins[0]?.id ?? "",
    runEndpointId: endpoints[0]?.id ?? ""
  };
}