#!/bin/bash -e

# An example hook script to verify what is about to be pushed.  Called by "git
# push" after it has checked the remote status, but before anything has been
# pushed.  If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done
# $2 -- URL to which the push is being done
#
# If pushing without using a named remote those arguments will be equal.
#
# Information about the commits which are being pushed is supplied as lines to
# the standard input in the form:
#
#   <local ref> <local sha1> <remote ref> <remote sha1>

REMOTE="$1"
URL="$2"

PUSH_COMMAND=$(ps -ocommand= -p $PPID)

IS_DESTRUCTIVE="\-\-delete|\-f"

PROTECTED_BRANCH="trailblazer"
CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)

WILL_DELETE_PROTECTED_BRANCH=":$PROTECTED_BRANCH"

if [[ $PUSH_COMMAND =~ $IS_DESTRUCTIVE ]]; then
    if [ $CURRENT_BRANCH = $PROTECTED_BRANCH ] || [[ $PUSH_COMMAND =~ $PROTECTED_BRANCH ]]; then
        echo "'$PROTECTED_BRANCH' cannot be deleted!"
        exit 1
    fi
    exit 0
fi

if [[ $PUSH_COMMAND =~ $WILL_DELETE_PROTECTED_BRANCH ]]; then
    echo "'$PROTECTED_BRANCH' cannot be deleted!"
    exit 1
fi

cargo fmt -- --check || (echo "Please run 'cargo fmt'"; false);

cargo clippy -- -D warnings || (echo "Please run 'cargo clippy'"; false);