#!/usr/bin/env bash

# ---
# IMPORTANT: Use the following statement at the TOP OF EVERY TEST SCRIPT
#            to ensure that this package's 'bin/' subfolder is added to the path so that
#            this package's CLIs can be invoked by their mere filename in the rest
#            of the script.
# ---
PATH=${PWD%%/test*}/bin:$PATH

# Execute your tests as shell commands below. 
# An exit code of zero signals success, any other code signals an error
# and causes this test to fail.
# See https://github.com/tlevine/urchin.

# Helper function for error reporting.
die() { (( $# > 0 )) && echo "ERROR: $*" >&2; exit 1; }

assertExpectedOutput() {
  [[ "$output" == "$expectedOutput" ]] || dieUnexpectedOutput
}

dieUnexpected() {
  die "\`${cmd[@]}\` failed unexpectedly."
}


dieUnexpectedOutput() {
  cat <<EOF >&2
ERROR: Unexpected output from \`${cmd[@]}\`:
  Expected:
$expectedOutput
  Actual:
$output
EOF
  exit 1
}


# -------

# Point awf to the test workflows folder created by ../setup_dir
kTEMP_DIR_PATH="$(< '../_tmp_tmpdirpath')"
export AWF_TEST_WFSROOTFOLDER="$kTEMP_DIR_PATH/workflows"

[[ -d $kTEMP_DIR_PATH ]] || die "Test setup failure: Temp. folder created by ../setup_dir unexpectedly not found: $kTEMP_DIR_PATH"

wfFolder="${AWF_TEST_WFSROOTFOLDER}/user.workflow.BD68EAC6-EA5A-479A-93F7-950D539603C2"

# ---
echo "-- Getting version number with path..."
cmd=( awf version '' "$wfFolder" )
expectedOutput='0.1.2'
output=$( "${cmd[@]}" ) || dieUnexpected
assertExpectedOutput

# For simplicity perform the remaining commands from within the workflow folder.
cd "$wfFolder" || die



# ---
echo "-- Getting version number without path..."
cmd=( awf version )
expectedOutput='0.1.2'
output=$( "${cmd[@]}" ) || dieUnexpected
assertExpectedOutput


echo "-- Incrementing patch component..."
cmd=( awf version patch )
expectedOutput='0.1.3'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput

echo "-- Incrementing minor component..."
cmd=( awf version minor )
expectedOutput='0.2.0'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput

echo "-- Incrementing major component..."
cmd=( awf version major )
expectedOutput='1.0.0'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput

echo "-- Setting explicit version..."
cmd=( awf version 2.3.4 )
expectedOutput='2.3.4'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput

echo "-- Forcing update to LOWER version..."
cmd=( awf version -f 2.3.3 )
expectedOutput='2.3.3'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput

echo "-- Forcing update FROM invalid version number..."
cp ./version ./version.org
echo 'not-a-version-number' > ./version
cmd=( awf version -f 2.3.5 )
expectedOutput='2.3.5'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput
mv ./version.org ./version


echo "-- Forcing update TO invalid version number..."
cp ./version ./version.org
cmd=( awf version -f 'not-a-version-number' )
expectedOutput='not-a-version-number'
"${cmd[@]}" || dieUnexpected
output=$(< ./version )
assertExpectedOutput
mv ./version.org ./version


# ---------- NEGATIVE TESTS

# ---
echo "-- Getting version number from a non-workflow folder should fail..."
cmd=( awf version '' /Library )
"${cmd[@]}" && die "Obtaining version number from non-workflow folder succeeded unexpectedly."


# ---
echo "-- Attempting to set invalid version number should fail..."
cmd=( awf version 'not-a-version-number' )
"${cmd[@]}" && die "Setting an invalid version number succeeded unexpectedly."

# ---
echo "-- Attempting to get version number without a 'version' file present should fail..."
mv version version1
cmd=( awf version )
"${cmd[@]}" && die "Getting a nonexistent version number succeeded unexpectedly."
mv version1 version

# ---
echo "-- Attempt to increment an currently invalid version number should fail..."
cp ./version ./version.org
echo 'not-a-version-number' > ./version
cmd=( awf version patch )
"${cmd[@]}" && die "Icrementing an invalid version number succeeded unexpectedly."
mv ./version.org ./version


exit 0