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import { as_type } from './crud.types'
export function crud_upload(type, fd, data, dispatch) {
return new Promise( (resolve, reject) => {
const id = data.id
Object.keys(data).forEach(key => {
if (key !== 'id') {
fd.append(key, data[key])
}
})
const xhr = new XMLHttpRequest()
xhr.upload.addEventListener("progress", uploadProgress, false)
xhr.addEventListener("load", uploadComplete, false)
xhr.addEventListener("error", uploadFailed, false)
xhr.addEventListener("abort", uploadCancelled, false)
xhr.open("POST", '/' + type + '/' + id + '/upload/')
xhr.send(fd)
dispatch && dispatch({ type: as_type(type, 'upload_loading')})
let complete = false
function uploadProgress (e) {
if (e.lengthComputable) {
const percent = Math.round(e.loaded * 100 / e.total) || 0
if (percent > 99) {
dispatch && dispatch({
type: as_type(type, 'upload_waiting'),
percent,
[type]: id,
})
} else {
dispatch && dispatch({
type: as_type(type, 'upload_progress'),
percent,
[type]: id,
})
}
}
else {
dispatch && dispatch({
type: as_type(type, 'upload_error'),
error: 'unable to compute upload progress',
[type]: id,
})
}
}
function uploadComplete (e) {
try {
const data = JSON.parse(e.target.responseText)
} catch (e) {
dispatch && dispatch({
type: as_type(type, 'upload_error'),
error: 'upload failed',
[type]: id,
})
return
}
dispatch && dispatch({
type: as_type(type, 'upload_complete'),
data,
[type]: id,
})
}
function uploadFailed (evt) {
dispatch && dispatch({
type: as_type(type, 'upload_error'),
error: 'upload failed',
[type]: id,
})
}
function uploadCancelled (evt) {
dispatch && dispatch({
type: as_type(type, 'upload_error'),
error: 'upload cancelled',
[type]: id,
})
}
})
}
export const upload_action = (type, id, fd) => dispatch => crud_upload(type, id, fd, dispatch)
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