import type { WorkspaceTabTarget } from "@/stores/workspace-tabs-store";

export function normalizeWorkspaceTabTarget(
  value: WorkspaceTabTarget | null | undefined,
): WorkspaceTabTarget | null {
  if (!value || typeof value !== "object" || typeof value.kind !== "string") {
    return null;
  }
  if (value.kind === "draft") {
    const draftId = trimNonEmpty(value.draftId);
    return draftId ? { kind: "draft", draftId } : null;
  }
  if (value.kind === "agent") {
    const agentId = trimNonEmpty(value.agentId);
    return agentId ? { kind: "agent", agentId } : null;
  }
  if (value.kind === "terminal") {
    const terminalId = trimNonEmpty(value.terminalId);
    return terminalId ? { kind: "terminal", terminalId } : null;
  }
  if (value.kind === "file") {
    const path = trimNonEmpty(value.path);
    return path ? { kind: "file", path: path.replace(/\\/g, "/") } : null;
  }
  if (value.kind === "setup") {
    const workspaceId = trimNonEmpty(value.workspaceId);
    return workspaceId ? { kind: "setup", workspaceId } : null;
  }
  return null;
}

export function workspaceTabTargetsEqual(
  left: WorkspaceTabTarget,
  right: WorkspaceTabTarget,
): boolean {
  if (left.kind !== right.kind) {
    return false;
  }
  if (left.kind === "draft" && right.kind === "draft") {
    return left.draftId === right.draftId;
  }
  if (left.kind === "agent" && right.kind === "agent") {
    return left.agentId === right.agentId;
  }
  if (left.kind === "terminal" && right.kind === "terminal") {
    return left.terminalId === right.terminalId;
  }
  if (left.kind === "file" && right.kind === "file") {
    return left.path === right.path;
  }
  if (left.kind === "setup" && right.kind === "setup") {
    return left.workspaceId === right.workspaceId;
  }
  return false;
}

export function buildDeterministicWorkspaceTabId(target: WorkspaceTabTarget): string {
  if (target.kind === "draft") {
    return target.draftId;
  }
  if (target.kind === "agent") {
    return `agent_${target.agentId}`;
  }
  if (target.kind === "terminal") {
    return `terminal_${target.terminalId}`;
  }
  if (target.kind === "setup") {
    return `setup_${target.workspaceId}`;
  }
  return `file_${target.path}`;
}

function trimNonEmpty(value: string | null | undefined): string | null {
  if (typeof value !== "string") {
    return null;
  }
  const trimmed = value.trim();
  return trimmed.length > 0 ? trimmed : null;
}