#!/usr/bin/env bash
set -e

# Look for problems in this working copy
[[ -e static/checkSource ]] || {
    echo "checkSource: Must be run from blog's root" 1>&2
    exit 1
}

# Check the syntax of Nix files
find . -name "*.nix" | grep -v '\.asv' | while read -r F
do
    echo "Checking '$F'" 1>&2
    nix-instantiate --parse "$F" > /dev/null
done

# Check if the helpers are up to date
REPO="warbo-packages"
DEF="static/nix/warbo-packages.nix"
echo "Checking $REPO version in $DEF" 1>&2

# Allow failure to get HEAD (e.g. in case we're offline)
if REV=$(git ls-remote "http://chriswarbo.net/git/$REPO.git" |
             grep HEAD | cut -d ' ' -f1 | cut -c1-7)
then
    grep "$REV" < "$DEF" > /dev/null || {
        echo "Didn't find $REPO rev '$REV' in $DEF" 1>&2
        exit 1
    }
fi