Revamp formatting and linting on commit

Remove the prepare script, and run the two stages manually. Better
handle Black reformatting by doing a check (for the errcode) then
reformat and abort commit to review.

.hooks/pre-commit

@@ -4,9 +4,16 @@ pushd $( git rev-parse --show-toplevel ) &>/dev/null
 
 ex=0
 
-./prepare
+./format check
 if [[ $? -ne 0 ]]; then
-    echo "Aborting commit due to formatting or linting errors."
+    ./format
+    echo "Black formatting change detected; review and recommit"
+    ex=1
+fi
+
+./lint
+if [[ $? -ne 0 ]]; then
+    echo "Linting error detected; correct and recommit"
     ex=1
 fi
 

build-and-deploy.sh

@@ -32,7 +32,8 @@ pushd $( git rev-parse --show-toplevel ) &>/dev/null
 
 # Prepare code
 echo "Preparing code (format and lint)..."
-./prepare || exit
+./format || exit 1
+./lint || exit 1
 
 # Build the packages
 echo -n "Building packages... "

format

@@ -5,10 +5,14 @@ if ! which black &>/dev/null; then
     exit 1
 fi
 
+if [[ $1 == "check" ]]; then
+    check="--check"
+fi
+
 pushd $( git rev-parse --show-toplevel ) &>/dev/null
 
 echo "Formatting..."
-black --safe --exclude api-daemon/migrations .
+black --safe ${check} --exclude api-daemon/migrations .
 ret=$?
 if [[ $ret -eq 0 ]]; then
     echo "Successfully formatted project!"

prepare

@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-
-#set -o errexit
-
-./format
-./lint