preconditions

#!/bin/bash

set -e

source <(otc-task-include lib/git.sh)
source <(otc-task-include lib/assert.sh)
source <(otc-task-include lib/vsts.sh)
source <(otc-task-include lib/console.sh)
source <(otc-task-include lib/azure-pipelines-yaml-protection.sh)
source <(otc-task-include lib/vsts-pr.sh)
source <(otc-task-include lib/vsts-pr-statuses.sh)


# Param lines_threshold
# Param ignore_lines_pattern
# Param diff_filter_args (--) ...
# Required environment variables:
#  - SYSTEM_PULLREQUEST_PULLREQUESTID
function capture-pr-size-and-perform-size-validation
{
	local lines_threshold="$1"
	local ignore_lines_pattern="$2"
	shift 2
	local diff_filter_args="$@"
	assert-not-empty lines_threshold
	assert-not-empty ignore_lines_pattern
	assert-not-empty SYSTEM_PULLREQUEST_PULLREQUESTID
	local pullrequest_id=$SYSTEM_PULLREQUEST_PULLREQUESTID	
	local changed_lines_report_json=$(count-changed-lines \
		$(get-base-branch) \
		"$ignore_lines_pattern" "$diff_filter_args")
	echo -n "Changed lines details: "
	echo $changed_lines_report_json
	echo "Adding changed lines data to PR properties collection ..."
	pullrequest-update-properties "$pullrequest_id" "$changed_lines_report_json"
	local changed_lines=$(echo $changed_lines_report_json | \
		jq -M '.filtered.insertions + .filtered.deletions - .filtered.comments_or_blank_lines')
	# Performing size validation in order to define as PR status
	echo "Considering (.filtered.insertions + .filtered.deletions - .filtered.comments_or_blank_lines) (= $changed_lines)"
	local status='succeeded'
	if [ "$changed_lines" -gt "$lines_threshold" ]
	then
		status='failed'		
		red "Pull request size ($changed_lines lines) exceeds threshold ($lines_threshold)."
	else
		green "Pull request size ($changed_lines lines) under threshold ($lines_threshold)."
	fi
	pullrequest-set-size-status "$pullrequest_id" "$status" "$changed_lines" "$lines_threshold"
}

function show-modified-items
{
	git-diff-prepare $(get-base-branch)
	echo "Modified items without filter:"
	echo "Add	Rem"	
	git diff --numstat $(get-base-branch)
}

assert-not-empty SYSTEM_PULLREQUEST_PULLREQUESTID
reset-pr-statuses $SYSTEM_PULLREQUEST_PULLREQUESTID
show-modified-items
azure-pipelines-yaml-protection
capture-pr-size-and-perform-size-validation "$@"