#!/bin/bash
# Checks the prain front door against a fake prain checkout and a fake rc-service.
# Run: bash scripts/test_prain.sh
set -u
p=$(cd "$(dirname "$0")" && pwd)/prain
t=$(mktemp -d)
trap 'rm -rf "$t"' EXIT
mkdir -p "$t/root/scripts" "$t/root/.venv/bin" "$t/bin"
cat > "$t/root/scripts/env.sh" <<EOF
export FROM_ENV_SH=yes
PATH=$t/root/.venv/bin:\$PATH
EOF
printf '#!/bin/sh\necho "prain $* env=$FROM_ENV_SH cwd=$PWD"\n' > "$t/root/.venv/bin/prain"
printf '#!/bin/sh\necho "$*"\n' > "$t/bin/rc-service"
chmod +x "$t/root/.venv/bin/prain" "$t/bin/rc-service"
cat > "$t/prain.conf" <<EOF
PRAIN_ROOT=$t/root
PRAIN_SERVICES="a b"
cmd_a='echo a: \$FROM_ENV_SH
  in \$PWD'
cmd_b='prain web --port 1'
need_b=a
ready_b=http://127.0.0.1:9/never
EOF
export PRAIN_CONF=$t/prain.conf PRAIN_READY_TIMEOUT=1 PATH=$t/bin:$PATH
fail=0
check() {  # name expected actual
	if [ "$2" = "$3" ]; then echo "ok   $1"; else echo "FAIL $1: expected [$2], got [$3]"; fail=1; fi
}
cd /
check passthrough "prain check x.toml env=yes cwd=/" "$("$p" check x.toml)"
check run-joins-lines-in-root "a: yes in $t/root" "$("$p" run a)"
check run-uses-venv-prain "prain web --port 1 env=yes cwd=$t/root" "$("$p" run b)"
check run-unknown-fails 1 "$("$p" run zzz 2>/dev/null; echo $?)"
check need "a" "$("$p" need b)"
check need-none "" "$("$p" need a)"
check wait-without-url 0 "$("$p" wait a; echo $?)"
check wait-times-out 1 "$("$p" wait b 2>/dev/null; echo $?)"
check up-in-order "--user prain.a start
--user prain.b start" "$("$p" up)"
check down-in-reverse "--user prain.b stop
--user prain.a stop" "$("$p" down)"
check status-one "--user prain.b status" "$("$p" status b)"
exit $fail