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const DOWNLOAD_LIFETIME = 30000

export async function upscaleImage({ file, path, model, scale = 1 }) {
    const query = new URLSearchParams({
        p: new URLSearchParams(location.search).get("p"),
        scale,
    })
    if (path !== undefined) query.set("path", path)
    if (model !== undefined) query.set("model", model)
    const response = await fetch(`/api/upscale?${query}`, {
        method: "POST",
        headers: { "Content-Type": "application/octet-stream" },
        body: file,
    })
    if (!response.ok) {
        if (response.headers.get("Content-Type")?.includes("application/json")) {
            const error = await response.json()
            throw new Error(error.detail)
        }
        throw new Error(`Upscale failed (${response.status})`)
    }
    return response.blob()
}

export async function downloadUpscale({ file, path, name, model, scale }) {
    const blob = await upscaleImage({ file, path, model, scale })
    const url = URL.createObjectURL(blob)
    const link = document.createElement("a")
    link.href = url
    link.download = `${name.replace(/\.[^.]+$/, "")}-upscaled.png`
    document.body.append(link)
    link.click()
    link.remove()
    setTimeout(() => URL.revokeObjectURL(url), DOWNLOAD_LIFETIME)
}