Autofill set positions (#41)

Implements #40

Co-authored-by: Raymond Li <hi@raymond.li>
Reviewed-on: #41
Co-authored-by: Raymond Li <raymo@csclub.uwaterloo.ca>
Co-committed-by: Raymond Li <raymo@csclub.uwaterloo.ca>

ceo/tui/positions/SetPositionsView.py

@@ -1,7 +1,9 @@
+from threading import Thread
+
 from asciimatics.widgets import Layout, Label, Text
 from zope import component
 
-from ...utils import defer, http_post
+from ...utils import defer, http_post, http_get
 from ..CeoFrame import CeoFrame
 from .GetPositionsView import position_names
 from ceo_common.interfaces import IConfig
@@ -9,6 +11,24 @@ from ceod.transactions.members.UpdateMemberPositionsTransaction import UpdateMem
 
 
 class SetPositionsView(CeoFrame):
+
+    """
+    Reset the positions to the currently set positions
+    """
+    def reset_positions(self):
+        def target():
+            self.flash_message('Looking up positions...')
+            try:
+                resp = http_get('/api/positions')
+                if not resp.ok:
+                    return
+                positions = resp.json()
+                for pos, username in positions.items():
+                    self._widgets[pos].value = username
+            finally:
+                self.clear_flash_message(force_update=True)
+        Thread(target=target).start()
+
     def __init__(self, screen, width, height, model):
         super().__init__(
             screen, height, width, model, 'SetPositions',
@@ -19,11 +39,11 @@ class SetPositionsView(CeoFrame):
 
         layout = Layout([100], fill_frame=True)
         self.add_layout(layout)
-        self._widgets = []
+        self._widgets = {}
         for pos in avail:
             suffix = ' (*)' if pos in required else ''
             widget = Text(position_names[pos] + suffix, pos)
-            self._widgets.append(widget)
+            self._widgets[pos] = widget
             layout.add_widget(widget)
 
         layout = Layout([100])
@@ -34,12 +54,12 @@ class SetPositionsView(CeoFrame):
         self.add_buttons(
             back_btn=True,
             next_scene='Confirm', on_next=self._next)
+        self.reset_positions()
         self.fix()
 
     def _ceoframe_on_reset(self):
         super()._ceoframe_on_reset()
-        for widget in self._widgets:
-            widget.value = None
+        self.reset_positions()
 
     def _next(self):
         self.save()