#!/usr/bin/env bash

EXIT_STATUS_DRAFT=0
EXIT_STATUS_APPROVAL=0
PR_NUMBER=null

if [ "${CI_FORCE_RUN}" == "true" ]; then
    echo -e "\e[32mWarning: CI_FORCE_RUN has been set to true, CI run will continue.\e[0m"
    exit 0;
fi

APPROVAL_CHECK=true
VERBOSE=false
for var in "$@"
do
    case "$var" in
      --no-approval-check) APPROVAL_CHECK=false;;
      --verbose) VERBOSE=true;;
      *) PR_NUMBER=$var
    esac
done

echo -e "\e[33mFetching data from Github APi for PR: $PR_NUMBER\e[0m"

PR_DATA=`curl \
    -H "Accept: application/vnd.github.v3+json" -H "Authorization: token ${GITHUB_TOKEN}" \
    https://api.github.com/repos/${REPO_OWNER}/${REPO_NAME}/pulls/${PR_NUMBER}`
DRAFT=`echo ${PR_DATA} | jq .draft`

if [ "${DRAFT}" == "false" ]; then
    echo -e "\e[32mPR is NOT DRAFT anymore, build can proceed.\e[0m"
else
    echo -e "\e[31mPR is DRAFT, build will stop.\e[0m"
    EXIT_STATUS_DRAFT=1
fi

if [ "$APPROVAL_CHECK" == "true" ]; then
    PR_REVIEW_DATA=`curl \
        -H "Accept: application/vnd.github.v3+json" -H "Authorization: token ${GITHUB_TOKEN}" \
        https://api.github.com/repos/${REPO_OWNER}/${REPO_NAME}/pulls/${PR_NUMBER}/reviews?per_page=100`
    APPROVED=`echo ${PR_REVIEW_DATA} | jq 'map(select(.state == "APPROVED")) | any'`

    if [ "${APPROVED}" == "true" ]; then
        echo -e "\e[32mPR is approved, build can proceed.\e[0m"
    else
        echo -e "\e[31mPR is NOT APPROVED yet, build will stop.\e[0m"
        EXIT_STATUS_APPROVAL=1

    fi
fi

[[ "$VERBOSE" == "true" ]] && echo $PR_DATA | jq
[[ "$VERBOSE" == "true" ]] && echo $PR_REVIEW_DATA | jq

EXIT_CODE=$(( $EXIT_STATUS_DRAFT + $EXIT_STATUS_APPROVAL ))
exit $EXIT_CODE