import type {
  DependencyJobRequest,
  LogBackfillRequest,
  RunDistributionGenerateRequest,
  RunUpdateRequest,
  ServerInstanceUpdateRequest,
  ServerLifecycleCommandRequest,
  ServerLifecycleCreateRequest,
  ServerInstanceResponse
} from "../api/types";
import type { ServerCreateFormState, ServerMetadataFormState, ServerRemovalConfirmationState } from "../contracts/serverManagement";

export function minimalServerCreateRequestFromForm(form: ServerCreateFormState, sequence = Date.now()): ServerLifecycleCreateRequest {
  const id = form.id.trim() || serverInstanceIdFromName(form.name, sequence);
  return {
    id,
    pluginId: form.pluginId.trim(),
    name: form.name.trim(),
    idempotencyKey: lifecycleIdempotencyKey("create", id, sequence)
  };
}

export function serverCreateRequestFromForm(form: ServerCreateFormState, sequence = Date.now()): ServerLifecycleCreateRequest {
  const id = form.id.trim() || serverInstanceIdFromName(form.name, sequence);
  return {
    id,
	pluginId: form.pluginId.trim(),
    name: form.name.trim(),
    idempotencyKey: lifecycleIdempotencyKey("create", id, sequence),
		deployment: {
			mode: form.deploymentMode,
			createInputs: Object.fromEntries(Object.entries(form.createInputs).map(([key, value]) => [key, value.trim()])),
			serverRoot: form.serverRoot.trim() || undefined,
			workingDirectory: form.workingDirectory.trim() || undefined,
			installCommand: form.installCommand.trim() || undefined,
			startCommand: form.startCommand.trim() || undefined,
			stopCommand: form.stopCommand.trim() || undefined,
			statusCommand: form.statusCommand.trim() || undefined,
			shell: form.shell || undefined
		}
  };
}

export function serverInstanceIdFromName(name: string, sequence = Date.now()): string {
  const normalized = name
    .trim()
    .toLowerCase()
    .normalize("NFKD")
    .replace(/[\u0300-\u036f]/g, "")
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "")
    .slice(0, 48)
    .replace(/-+$/g, "");
  const suffix = String(Math.max(0, Math.floor(Number.isFinite(sequence) ? sequence : Date.now())));
  return normalized ? `server-${normalized}-${suffix}` : `server-${suffix}`;
}

export function serverLifecycleCommandRequest(instance: ServerInstanceResponse, action: "deploy" | "start" | "stop" | "status", sequence = Date.now()): ServerLifecycleCommandRequest {
	return {
		expectedConfigVersion: instance.configVersion,
    idempotencyKey: lifecycleIdempotencyKey(action, instance.id, sequence)
  };
}

export function serverMetadataUpdateRequestFromForm(form: ServerMetadataFormState): ServerInstanceUpdateRequest {
  return { name: form.name.trim() };
}

export function serverDeleteConfirmation(instance: ServerInstanceResponse): ServerRemovalConfirmationState {
  return {
    action: "delete",
    serverInstanceId: instance.id,
    name: instance.name,
    state: instance.state
  };
}

export function runDistributionGenerateRequest(serverInstanceId: string, targetOs: string, targetArch: string, sequence = Date.now()): RunDistributionGenerateRequest {
  return {
    targetOs,
    targetArch,
    idempotencyKey: runtimeIdempotencyKey("run.generate", serverInstanceId, sequence)
  };
}

export function runUpdateRequest(serverInstanceId: string, artifactId: string, checksum?: string, sequence = Date.now()): RunUpdateRequest {
  return {
    artifactId,
    checksum,
    idempotencyKey: runtimeIdempotencyKey("run.update", serverInstanceId, sequence)
  };
}

export function dependencyJobRequest(serverInstanceId: string, probeKey: string, installPlanKey = "", planDigest = "", sequence = Date.now()): DependencyJobRequest {
  return {
    probeKey: probeKey.trim(),
    installPlanKey: installPlanKey.trim() || undefined,
    planDigest: planDigest.trim() || undefined,
    idempotencyKey: runtimeIdempotencyKey(installPlanKey ? "dependencies.install" : "dependencies.check", serverInstanceId, sequence)
  };
}

export function logBackfillRequest(serverInstanceId: string, sourceKey: string, checkpointRef = "", limit = 200, sequence = Date.now()): LogBackfillRequest {
  return {
    sourceKey: sourceKey.trim(),
    checkpointRef: checkpointRef.trim() || undefined,
    limit,
    idempotencyKey: runtimeIdempotencyKey("logs.backfill", serverInstanceId, sequence)
  };
}

export function runtimeIdempotencyKey(action: string, serverInstanceId: string, sequence: number): string {
  return `web:${action}:${serverInstanceId}:${sequence}`;
}

export function lifecycleIdempotencyKey(action: "create" | "deploy" | "start" | "stop" | "status", serverInstanceId: string, sequence: number): string {
  return `web:${action}:${serverInstanceId}:${sequence}`;
}