#!/bin/sh -

set -e
set -x

# using ssh-agent to make this quicker:
# eval $(ssh-agent)
# ssh-add

# Token file must contain:
# Authorization: token <token>
# where <token> is generated from: Settings -> Applications, or:
# <basegiteaurl>/user/settings/applications
tokenfile="$PWD/.gitea.token"

# domain used to detect if it's a repo that we can update
gitdomain=funkthat.com

# the gitea API url
giteabaseurl="https://www.funkthat.com/gitea/api/v1"

echo "start"

# Command to list all the repos that have master as it's default branch.
#curl -s -X GET "https://www.funkthat.com/gitea/api/v1/users/jmg/repos" -H  "accept: application/json" | jq -r '(.[]) | select(.default_branch == "master") | .name'

if ! [ -x $(which jq) ]; then
	echo 'Error: jq needs to be installed'
	exit 1
fi

# -H @"$tokenfile"
# Set the default branch:
# curl -v -i -d "$(jq -n '{ default_branch: "main" }')" -X PATCH "https://www.funkthat.com/gitea/api/v1/repos/jmg/projects" -H "Content-Type: application/json" -H  "accept: application/json" -H @"$tokenfile"
#curl -s -X GET "https://www.funkthat.com/gitea/api/v1/repos/jmg/ggate" -H  "accept: application/json" | jq '.default_branch'
#echo 'list'

# make sure we are in a correct repo
cd /Users/jmg/git/fbsdembdev
r=$(git remote -v | grep git.funkthat.com 2>&1)
if [ x"$r" = x"" ]; then
	echo 'not a gitea repo'
	exit 1
fi

# get the remote that we need to update
gitremote=$(echo "$r" | awk '{ print $1; exit 0 }')

# get the gitea user/project, this currently assumes that whatever
# the url is, it ends with <username>/<reponame>.git
giteauserproj=$(echo "$r" | awk '{ url=$2; cnt = split(url, surl, "/"); proj = split(surl[cnt], sproj, "."); printf("%s/%s", surl[cnt - 1], sproj[1]); exit 0; }')

# see if there's a master branch
r=$(git branch | grep master || true)
if [ x"$r" = x"" ]; then
	echo 'no master branch'
	exit 1
fi

# Check if we are on that branch
onotherbranch=1
if [ x"${r#\* }" != x"$r" ]; then
	onotherbranch=0
	git checkout $(git log | head -n 1 | awk '{print $2}') >/dev/null 2>&1
fi

# rename the branch
git branch -m master main

# change upstream
upmerge=$(git config branch.main.merge)
if [ x"${upmerge%master}" != x"$upmerge" ]; then
	git config branch.main.merge refs/heads/main
fi

# push new main branch
git push origin main

# update gitea
curl -v -i -d "$(jq -n '{ default_branch: "main" }')" -X PATCH "${giteabaseurl}/repos/${giteauserproj}" -H "Content-Type: application/json" -H  "accept: application/json" -H @"$tokenfile"

# delete old branch on server
git push -d origin master

# restore our checkout
if [ x"$onotherbranch" = x"0" ]; then
	git checkout main
fi