Replace Background

//native

type Recraft = {

  apiKey: string;

};

type Base64 = string;

/**

 * Replace Background

 *

 */

export async function main(

  auth: Recraft,

  body: {

    block_nsfw?: false | true;

    calculate_features?: false | true;

    image: {

      base64: Base64;

      type:

        | "image/png"

        | "image/jpeg"

        | "image/gif"

        | "application/pdf"

        | "appication/json"

        | "text/csv"

        | "text/plain"

        | "audio/mpeg"

        | "audio/wav"

        | "video/mp4";

      name: string;

    };

    mask: {

      base64: Base64;

      type:

        | "image/png"

        | "image/jpeg"

        | "image/gif"

        | "application/pdf"

        | "appication/json"

        | "text/csv"

        | "text/plain"

        | "audio/mpeg"

        | "audio/wav"

        | "video/mp4";

      name: string;

    };

    model?:

      | "refm1"

      | "recraft20b"

      | "recraftv2"

      | "recraftv3"

      | "flux1_1pro"

      | "flux1dev";

    n?: number;

    prompt: string;

    random_seed?: number;

    response_format?: "url" | "b64_json";

    style?:

      | "digital_illustration"

      | "icon"

      | "realistic_image"

      | "vector_illustration";

    style_id?: string;

    substyle?:

      | "2d_art_poster"

      | "3d"

      | "80s"

      | "glow"

      | "grain"

      | "hand_drawn"

      | "infantile_sketch"

      | "kawaii"

      | "pixel_art"

      | "psychedelic"

      | "seamless"

      | "voxel"

      | "watercolor"

      | "broken_line"

      | "colored_outline"

      | "colored_shapes"

      | "colored_shapes_gradient"

      | "doodle_fill"

      | "doodle_offset_fill"

      | "offset_fill"

      | "outline"

      | "outline_gradient"

      | "uneven_fill"

      | "70s"

      | "cartoon"

      | "doodle_line_art"

      | "engraving"

      | "flat_2"

      | "line_art"

      | "linocut"

      | "b_and_w"

      | "enterprise"

      | "hard_flash"

      | "hdr"

      | "motion_blur"

      | "natural_light"

      | "studio_portrait"

      | "line_circuit"

      | "2d_art_poster_2"

      | "engraving_color"

      | "flat_air_art"

      | "hand_drawn_outline"

      | "handmade_3d"

      | "stickers_drawings";

    text_layout?: { bbox: number[][]; text: string }[];

  },

) {

  const url = new URL(

    `https://external.api.recraft.ai/v1/images/replaceBackground`,

  );

  const formData = new FormData();

  for (const [k, v] of Object.entries(body)) {

    if (v !== undefined && v !== "") {

      if (["image", "mask"].includes(k)) {

        const { base64, type, name } = v as {

          base64: Base64;

          type: string;

          name: string;

        };

        formData.append(

          k,

          new Blob([Uint8Array.from(atob(base64), (m) => m.codePointAt(0)!)], {

            type,

          }),

          name,

        );

      } else {

        formData.append(k, String(v));

      }

    }

  }

  const response = await fetch(url, {

    method: "POST",

    headers: {

      Authorization: "Bearer " + auth.apiKey,

    },

    body: formData,

  });

  if (!response.ok) {

    const text = await response.text();

    throw new Error(`${response.status} ${text}`);

  }

  return await response.json();

}