#!/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

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

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

dieUnexpectedOutput() {
  cat <<EOF >&2
ERROR: Unexpected output from \`${cmd[@]}\`:
  Expected:
$expectedOutput
  Actual:
$output
  Diff:
EOF
  diff <(printf '%s\n' "$expectedOutput") <(printf '%s\n' "$output")
  exit 1
}

# Point awf to the test workflows folder created in ../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"

# --
echo "-- Moving installed workflow to dev location..."

# Get the folder path of an installed workflow.
bundleid='net.same2u.stringlength.awf'
cmd=( awf which "$bundleid" )
wfFolder=$( "${cmd[@]}" ) || dieUnexpected

# -- Clone that workflow, so we can apply `todev` and `fromdev` to it
wfFolderClone="${wfFolder}.clone"
bundleidClone="${bundleid}.clone"
rm -rf "$wfFolderClone"
cp -a "$wfFolder" "$wfFolderClone" || die "Failed to clone folder '$wfFolder' to '$wfFolderClone'"
# Assign a unique bundle ID.
/usr/libexec/PlistBuddy -c "set :bundleid ${bundleidClone}" "$wfFolderClone/info.plist" || die "Failed to update the bundle ID in: $wfFolderClone/info.plist" 
devWfFolderName='StringLengthClone.awf'
devWfFolder="$kTEMP_DIR_PATH/dev/$devWfFolderName"
rm -rf "$devWfFolder"
# The full path of the symlink that will be created when applying `awf todev` below.
wfSymlinkToDevFolder="${kTEMP_DIR_PATH}/workflows/dev.workflow.${devWfFolderName}"
rm -f "$wfSymlinkToDevFolder"

# --
echo "-- Converting installed workflow to dev workflow..."
cmd=( awf todev "$wfFolderClone" "$devWfFolder" )
"${cmd[@]}" || die "Failed to convert workflow '$wfFolderClone' to a dev workflow in '$devWfFolder'"
wfSymlinkToDevFolder="${AWF_TEST_WFSROOTFOLDER}/dev.workflow.${devWfFolderName}"

linkTarget=$(readlink "$wfSymlinkToDevFolder") || dieUnexpected

[[ "$linkTarget" == "$devWfFolder" ]] || die "Expected symlink '$wfSymlinkToDevFolder' to point to '$devWfFolder', but it points to '$linkTarget'"


# --
echo "-- Converting dev workflow back to installed workflow..."

cmd=( awf fromdev "$devWfFolder" )
"${cmd[@]}" || dieUnexpected

[[ ! -d "$devWfFolder" ]] || die "Dev folder '$devWfFolder' unexpectedly still exists."


# --
echo "-- Copying dev workflow to installed workflow while retaining the dev workflow..."

# Get the current folder path of the moved-back-to-installed-workflows workflow.
cmd=( awf which "$bundleidClone" )
wfFolderClone=$( "${cmd[@]}" ) || dieUnexpected

# Move it back to a dev workflow again.
cmd=( awf todev "$wfFolderClone" "$devWfFolder" )
"${cmd[@]}" || dieUnexpected

# Now *copy* it to the installed workflows, keeping the dev folder as a *detached copy*.
cmd=( awf fromdev -k "$devWfFolder" )
"${cmd[@]}" || dieUnexpected

[[ -d "$devWfFolder" ]] || die "Dev folder '$devWfFolder' unexpectedly no longer exists."

# Get the current folder path of the copied-to-installed-workflows workflow.
cmd=( awf which "$bundleidClone" )
wfFolderClone=$( "${cmd[@]}" ) || dieUnexpected

# Make sure that the original dev workflow and its new copy among the installed workflows match.
diff -r -x '.DS_Store' "$devWfFolder" "$wfFolderClone" || die "Folder contents unexpectedly do not match: '$devWfFolder' vs. '$wfFolderClone'"

# ------- NEGATIVE tests

# --
echo "-- Trying todev to a nonempty folder should fail..."
cmd=( awf todev "$wfFolderClone" "$devWfFolder" )
"${cmd[@]}" 2>/dev/null && die "\`${cmd[@]}\` succeeded unexpectedly despite nonempty target folder."

# --
echo "-- Trying fromdev when a target workflow with the same bundle ID already exists should fail..."
cmd=( awf fromdev "$devWfFolder" )
"${cmd[@]}" 2>/dev/null && die "\`${cmd[@]}\` succeeded unexpectedly despite bundle ID already existing among installed workflows."

rm -rf "$devWfFolder"
rm -rf "$wfFolderClone"

exit 0