import type { FileInspection } from "./protocol";

export interface FileRecord {
  name: string;
  path: string;
  size: number;
  type: string;
  lastModified: number;
  inspection?: FileInspection;
  inspectionStatus?:
    "queued" | "inspecting" | "inspected" | "error" | "cancelled";
  inspectionError?: string;
  sha256?: string;
  sha512?: string;
}

function inspectionStatus(
  record: FileRecord,
): NonNullable<FileRecord["inspectionStatus"]> {
  return (
    record.inspectionStatus ?? (record.inspection ? "inspected" : "queued")
  );
}

export function manifestJson(records: FileRecord[]): string {
  return JSON.stringify(
    {
      schemaVersion: 2,
      generatedBy: "add-ideas File Tools 0.2.0",
      inspectionCoverage: {
        total: records.length,
        inspected: records.filter(
          (record) => inspectionStatus(record) === "inspected",
        ).length,
        failed: records.filter((record) => inspectionStatus(record) === "error")
          .length,
        cancelled: records.filter(
          (record) => inspectionStatus(record) === "cancelled",
        ).length,
        pending: records.filter((record) =>
          ["queued", "inspecting"].includes(inspectionStatus(record)),
        ).length,
      },
      files: [...records]
        .sort((left, right) => left.path.localeCompare(right.path))
        .map((record) => ({
          path: record.path,
          size: record.size,
          lastModified: new Date(record.lastModified).toISOString(),
          claimedMime: record.type || null,
          detectedMime: record.inspection?.detected?.mime ?? null,
          inspectionStatus: inspectionStatus(record),
          inspectionError: record.inspectionError ?? null,
          sha256: record.sha256 ?? null,
          sha512: record.sha512 ?? null,
          findings: record.inspection?.findings ?? [],
        })),
    },
    null,
    2,
  );
}

function csv(value: unknown): string {
  const text = String(value ?? "");
  const safe = /^[=+\-@\t\r]/u.test(text) ? `'${text}` : text;
  return `"${safe.replaceAll('"', '""')}"`;
}

export function manifestCsv(records: FileRecord[]): string {
  const lines = [
    [
      "path",
      "size",
      "lastModified",
      "claimedMime",
      "detectedMime",
      "inspectionStatus",
      "inspectionError",
      "sha256",
      "sha512",
    ]
      .map(csv)
      .join(","),
  ];
  for (const record of [...records].sort((left, right) =>
    left.path.localeCompare(right.path),
  ))
    lines.push(
      [
        record.path,
        record.size,
        new Date(record.lastModified).toISOString(),
        record.type,
        record.inspection?.detected?.mime,
        inspectionStatus(record),
        record.inspectionError,
        record.sha256,
        record.sha512,
      ]
        .map(csv)
        .join(","),
    );
  return lines.join("\r\n") + "\r\n";
}