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path: root/src/lib/media/manip.web.ts
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// import {Share} from 'react-native'
// import * as Toast from 'view/com/util/Toast'

export interface DownloadAndResizeOpts {
  uri: string
  width: number
  height: number
  mode: 'contain' | 'cover' | 'stretch'
  maxSize: number
  timeout: number
}

export interface Image {
  path: string
  mime: string
  size: number
  width: number
  height: number
}

export async function downloadAndResize(_opts: DownloadAndResizeOpts) {
  // TODO
  throw new Error('TODO')
}

export interface ResizeOpts {
  width: number
  height: number
  mode: 'contain' | 'cover' | 'stretch'
  maxSize: number
}

export async function resize(
  _localUri: string,
  _opts: ResizeOpts,
): Promise<Image> {
  // TODO
  throw new Error('TODO')
}

export async function compressIfNeeded(
  img: Image,
  maxSize: number,
): Promise<Image> {
  if (img.size > maxSize) {
    // TODO
    throw new Error(
      "This image is too large and we haven't implemented compression yet -- sorry!",
    )
  }
  return img
}

export interface Dim {
  width: number
  height: number
}
export function scaleDownDimensions(dim: Dim, max: Dim): Dim {
  if (dim.width < max.width && dim.height < max.height) {
    return dim
  }
  let wScale = dim.width > max.width ? max.width / dim.width : 1
  let hScale = dim.height > max.height ? max.height / dim.height : 1
  if (wScale < hScale) {
    return {width: dim.width * wScale, height: dim.height * wScale}
  }
  return {width: dim.width * hScale, height: dim.height * hScale}
}

export async function saveImageModal(_opts: {uri: string}) {
  // TODO
  throw new Error('TODO')
}

export async function moveToPremanantPath(path: string) {
  return path
}

export async function getImageDim(path: string): Promise<Dim> {
  var img = document.createElement('img')
  const promise = new Promise((resolve, reject) => {
    img.onload = resolve
    img.onerror = reject
  })
  img.src = path
  await promise
  return {width: img.width, height: img.height}
}