5 files changed, 255 insertions, 0 deletions
diff --git a/app/client/api/crud.actions.js b/app/client/api/crud.actions.js
new file mode 100644
index 0000000..ca51dbb
--- /dev/null
+++ b/app/client/api/crud.actions.js
@@ -0,0 +1,35 @@
+import crud from '../../api/crud.fetch'
+import { as_type } from './crud.types'
+
+/*
+for our crud events, create corresponding actions
+the actions fire a 'loading' event, call the underlying api method, and then resolve.
+so you can do ... 
+  var folderActions = crud_actions('folder')  
+  folderActions('upload', (dispatch) => {
+    new Promise((resolve, reject) => {
+      fetch(...)
+      .then(() => resolve(data))
+      .catch(e => throw e)
+    })
+  })
+  folderActions.index({ module: 'samplernn' })
+*/
+
+export function crud_actions(type) {
+  const fetch_type = crud_fetch(type)
+  return ['index', 'show', 'create', 'update', 'destroy'].reduce((lookup, param) => {
+    lookup[param] = crud_action(type, 'index', () => fetch_type[type](param)]),
+    return lookup
+  }, { action: (method, fn) => crud_action(type, method, fn) })
+}
+
+export const crud_action = (type, method, fn) => dispatch => {
+    dispatch({ type: as_type(type, method + '_loading') })
+    fn(dispatch).then(data => {
+      dispatch({ type: as_type(type, method), data })
+    }).catch(e => {
+      dispatch({ type: as_type(type, method + '_error') })
+    })
+  }
+}
diff --git a/app/client/api/crud.fetch.js b/app/client/api/crud.fetch.js
new file mode 100644
index 0000000..fadd2b6
--- /dev/null
+++ b/app/client/api/crud.fetch.js
@@ -0,0 +1,100 @@
+import fetch from 'node-fetch'
+
+export function crud_fetch(type, tag) {
+  const uri = '/' + type + 's/' + (tag || '')
+  return {
+    index: q => {
+      return fetch(_get_url(uri, q), _get_headers())
+        .then(req => req.json())
+        .catch(error)
+    },
+    
+    show: id => {
+      return fetch(uri + id)
+        .then(req => req.json())
+        .catch(error)
+    },
+    
+    create: data => {
+      return fetch(uri, post(data))
+        .then(req => req.json())
+        .catch(error)
+    },
+
+    update: data => {
+      return fetch(uri + data.id, put(data))
+        .then(req => req.json())
+        .catch(error)
+    },
+
+    destroy: data => {
+      return fetch(uri + data.id, destroy(data))
+        .then(req => req.json())
+        .catch(error)
+    },
+
+    upload: data => {
+      return fetch(uri, postBody(data))
+        .then(req => req.json())
+        .catch(error)
+    },
+  }
+}
+
+function _get_url(_url, data) {
+  const url = new URL(window.location.origin + _url)
+  if (data) {
+    Object.keys(data).forEach(key => url.searchParams.append(key, data[key]))
+  }
+  return url
+}
+function _get_headers() {
+  return {
+    method: 'GET',
+    headers: {
+      'Accept': 'application/json',
+    },
+  }
+}
+function post(data) {
+  return {
+    method: 'POST',
+    body: JSON.stringify(data),
+    headers: {
+      'Accept': 'application/json',
+      'Content-Type': 'application/json'
+    },
+  }
+}
+export function postBody(data) {
+  return {
+    method: 'POST',
+    body: data,
+    headers: {
+      'Accept': 'application/json',
+    },
+  }
+}
+function put(data) {
+  return {
+    method: 'PUT',
+    body: JSON.stringify(data),
+    headers: {
+      'Accept': 'application/json',
+      'Content-Type': 'application/json'
+    },
+  }
+}
+function destroy(data) {
+  return {
+    method: 'DELETE',
+    body: JSON.stringify(data),
+    headers: {
+      'Accept': 'application/json',
+      'Content-Type': 'application/json'
+    },
+  }
+}
+function error(err) {
+  console.warn(err)
+}
diff --git a/app/client/api/crud.type.js b/app/client/api/crud.type.js
new file mode 100644
index 0000000..6c4a2f4
--- /dev/null
+++ b/app/client/api/crud.type.js
@@ -0,0 +1,30 @@
+
+export const as_type = (a, b) => [a, b].join('_').toUpperCase()
+
+export function crud_type(type, actions=[]){
+  return actions
+    .concat([
+      'index_loading',
+      'index',
+      'index_error',
+      'show_loading',
+      'show',
+      'show_error',
+      'create_loading',
+      'create',
+      'create_error',
+      'update_loading',
+      'update',
+      'update_error',
+      'destroy_loading',
+      'destroy',
+      'destroy_error',
+      'upload_loading',
+      'upload_progress',
+      'upload_complete',
+      'upload_error',
+      'sort',
+    ])
+    .reduce((a, b) => (a[b] = as_type(type, b)) && a, {})
+    return aa
+}
diff --git a/app/client/api/crud.upload.js b/app/client/api/crud.upload.js
new file mode 100644
index 0000000..42aae2b
--- /dev/null
+++ b/app/client/api/crud.upload.js
@@ -0,0 +1,70 @@
+import { as_type } from './crud.types'
+
+export function upload(type, id, fd, dispatch) => {
+  return new Promise( (resolve, reject) => {
+    const xhr = new XMLHttpRequest()
+    xhr.upload.addEventListener("progress", uploadProgress, false)
+    xhr.addEventListener("load", uploadComplete, false)
+    xhr.addEventListener("error", uploadFailed, false)
+    xhr.addEventListener("abort", uploadCanceled, false)
+    xhr.open("POST", '/' + type + '/' + id + '/upload/')
+    xhr.send(fd)
+
+    dispatch && dispatch({ type: as_type(type, 'upload_loading')})
+
+    function uploadProgress (e) {
+      if (e.lengthComputable) {
+        dispatch && dispatch({
+          type: as_type(type, 'upload_progress'),
+          percent: Math.round(e.loaded * 100 / e.total),
+          [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,
+      })
+    }
+
+    uploadFailed = function (evt) {
+      dispatch && dispatch({
+        type: as_type(type, 'upload_error'),
+        error: 'upload failed',
+        [type]: id,
+      })
+    }
+
+    uploadCancelled  = function (evt) {
+      dispatch && dispatch({
+        type: as_type(type, 'upload_error'),
+        error: 'upload cancelled'
+        [type]: id,
+      })
+    }
+  })
+}
+
+export function uploadAction(type, id, fd) {
+  return dispatch => upload(type, id, fd, dispatch)
+}
+\ No newline at end of file
diff --git a/app/client/api/index.js b/app/client/api/index.js
new file mode 100644
index 0000000..2603b38
--- /dev/null
+++ b/app/client/api/index.js
@@ -0,0 +1,20 @@
+import FormData from 'form-data'
+import fetch from 'node-fetch'
+
+import { crud_fetch, postBody } from './crud.fetch'
+
+export const folder = crud_fetch('folder')
+
+folder.upload = (folder_id, files) => {
+  var data = new FormData()
+  for (var i = 0; i < files.length; i++) {
+    data.append('file', files[i])
+  }
+  return fetch('/api/folders/' + folder_id, postBody(data))
+    .then(req => req.json())
+    .catch(error)
+}
+
+export const file = crud_fetch('file')
+export const task = crud_fetch('dataset')
+export const task = crud_fetch('task')