import { exiftool } from "exiftool-vendored";
import type { FileInfo } from "./files";

export interface ShootingConditions {
  make: string;
  model: string;
  lensMake: string;
  lensModel: string;
  focalLength: string;
  focalLength35: string;
  shutterSpeed: string;
  fStop: string;
  iso: string;
  timestamp: string;
}

export const extractShootingConditions = async (
  fileInfo: FileInfo,
): Promise<ShootingConditions> => {
  const path = fileInfo.rawPath ?? fileInfo.jpegPath;

  try {
    const exifData = await exiftool.read(path);

    return {
      make: exifData.Make ?? "Unknown",
      model: exifData.Model ?? "Unknown",
      lensMake: exifData.LensMake ?? "Unknown",
      lensModel: exifData.LensModel ?? "Unknown",
      focalLength: exifData.FocalLength ?? "Unknown",
      focalLength35: exifData.FocalLengthIn35mmFormat ?? "Unknown",
      shutterSpeed: exifData.ExposureTime ?? "Unknown",
      fStop: exifData.FNumber?.toString() ?? "Unknown",
      iso: exifData.ISO?.toString() ?? "Unknown",
      timestamp: new Date(
        (exifData.CreateDate?.toString() as string).replace(/\./g, ":"),
      ).toISOString(),
    };
  } catch (error: any) {
    throw new Error(
      `Failed to extract EXIF data from ${path}: ${error.message}`,
    );
  }
};

export const createImageCaption = (exif: ShootingConditions) => {
  return `${exif.make} ${exif.model}, ${exif.lensMake} ${exif.lensModel} @ ${exif.focalLength} (${exif.focalLength35}), ${exif.shutterSpeed} s, f/${exif.fStop}, ISO ${exif.iso}`;
};