#!/usr/bin/env bash
# push [INTERVALSECS] - push to github CI branch, watch for a successful run, then push to master

set -e

INTERVAL="${1:-10}"

LOCALBRANCH=master
REMOTE=github
REMOTECIBRANCH=ci
REMOTEMAINBRANCH=master
NUMRUNS=3
NUMCOMMITS=5
CISTARTDELAY=5   # between ci push and run start
MAINPUSHDELAY=5  # between run end and master push

gitlog() {
    REF=$1
    git log --format='%ad %h %s%d' --date=short -$NUMCOMMITS ${REF:+"$REF"}
}

runlog() {
    echo "latest runs are:"
    gh run list -L$NUMRUNS
}

ciwait() {
    runlog
    echo "waiting for CI to start..."
    sleep $CISTARTDELAY
    runlog
    echo "waiting for CI to finish..."
    ciwatch "$INTERVAL"
    runlog
    echo "waiting for master to notice CI success..."
    sleep $MAINPUSHDELAY
}

# ensure git's output paging doesn't stop progress
export PAGER=cat

echo "latest local commits are:"
gitlog
echo "force-pushing $LOCALBRANCH to $REMOTE/$REMOTECIBRANCH"
git push -f $REMOTE $LOCALBRANCH:$REMOTECIBRANCH
ciwait
echo "pushing CI-passing $LOCALBRANCH to $REMOTE/$REMOTEMAINBRANCH"
git push $REMOTE $LOCALBRANCH:$REMOTEMAINBRANCH
echo "latest commits on $REMOTE/$REMOTEMAINBRANCH are:"
gitlog $REMOTE/$REMOTEMAINBRANCH
echo "done"