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#!/bin/bash

autoIssue() {

assigneeName=$1

token=$2

issueNum=$3

# Check if the user can be assigned

echo "Attempting to assign user $assigneeName to issue $issueNum"

checkAccess=$(curl --silent --output /dev/null --write-out "%{http_code}" -L -H "Accept: application/vnd.github+json" -H "Authorization: Bearer $token" -H "X-GitHub-Api-Version: 2022-11-28" https://api.github.com/repos/microsoft/Oryx/assignees/$assigneeName)

if [[ "$checkAccess" =~ ^2 ]]; then

res=$(curl --silent --output /dev/null --write-out "%{http_code}" -X POST "https://api.github.com/repos/microsoft/Oryx/issues/$issueNum/assignees" -H "Accept: application/vnd.github+json" -H "Authorization: Bearer $token" -d "{\"assignees\": ["\"$assigneeName\""]}")

# Check for curl response status

if [[ "$res" =~ ^2 ]]; then

exit 0

else

echo "Error: Failed to assign isssue $issueNum. Check token and issue status."

exit 1

fi

else

echo "Error: Engineer Access denied."

return 1

fi

}

tryAssignIssueToCustomOncall() {

today=$1

token=$2

issue=$3

input="$CUSTOM_ONCALL_ROTATION"

# Github parses new line as "\n\r". We're removing the "\n" and changing "\r" to ";" in order to parse entries

# Removing "\n"

input="${input//$'\n'/''}"

# Replacing "\r" with ";"

input="${input//$'\r'/';'}"

if [ -z "$input" ]; then

return 1

fi

# Custom oncall rotation defined in repo variable. Using format:

# {github-username},{start-date},{end-date}

# Divide each entry by ";"

IFS=';' read -ra arr <<< "$input"

for i in "${arr[@]}"

do

# Divide each field by ","

IFS=',' read -ra entry <<< "$i"

name=$(echo ${entry[0]})

startDate=$(echo ${entry[1]})

endDate=$(echo ${entry[2]})

startDate=$(date -d $startDate +%s)

endDate=$(date -d $endDate +%s)

if [ "$today" -ge "$startDate" ] && [ "$today" -le "$endDate" ]; then

echo "Custom oncall found for $name"

autoIssue $name $token $issue

fi

done

}

# https://medium.com/@Drew_Stokes/bash-argument-parsing-54f3b81a6a8f

PARAMS=""

while (( "$#" )); do

case "$1" in

--token) #Github token flag

authToken=$2

shift 2

;;

--issue) # Issue number flag

issueNum=$2

shift 2

;;

--)

shift

break

;;

*)

PARAMS="$PARAMS $1"

shift

;;

esac

done

eval set -- "$PARAMS"

today=$(date +%s)

# Oncall rotation is defined in repo variable. Using format:

# {github-username-1},{github-username-2},...

# Parsing oncall engineer lists into array and seperating them by ','

IFS=',' read -ra parsedOncalls <<< "$ONCALL_LIST"

oncallArrLen=${#parsedOncalls[@]}

# anchor Date is Nov 7 2023 10:00 PST

anchorDate=1699380000

d=$(((today - anchorDate)/60/60/24/7))

pos=`echo "$d%$oncallArrLen" | bc`

currentOncall=`echo ${parsedOncalls[$pos]}`

# Check if custom rotation env var is present or not

if [ -n "$CUSTOM_ONCALL_ROTATION" ]; then

# If yes, try assign it to custom oncall engineer

# Function exit 0 when successfully assigned it to custom oncall engineer

tryAssignIssueToCustomOncall $today $authToken $issueNum

fi

# If failed, then assign to current oncall.

autoIssue $currentOncall $authToken $issueNum

exit 1