#!/bin/bash

rname=$(date +%s | sha256sum | base64 | head -c 32)

if [ -z $GOGS_ROOT_URL ]
then
	printf "Need to set GOGS_ROOT_URL environment variable\n" >&2
	printf "\tIE: https://git.cynarski.pl\n" >&2

    exit
fi

if [ -z $GOGS_TOKEN ]
then
	printf "Need to set GOGS_TOKEN environment variable\n" >&2
	printf "\tThis can be obtained at $GOGS_ROOT_URL/user/settings/applications\n" >&2
	exit
fi

if [ -z $GOGS_USER ]
then
	printf "Need to set GOGS_USER environment variable\n" >&2
	exit
fi

if [ -z $GOGS_REPO ]
then
    printf "Need to set GOGS_REPO environment variable\n" >&2
    exit
fi 

if [ -f $HOME/.ssh/gogs.pub ]; then
    printf "Gogs deploy key is present\n" >&2
else
    mkdir -p $HOME/.ssh/
    ssh-keygen -f $HOME/.ssh/gogs
    chmod 400 $HOME/.ssh/gogs
    chmod 400 $HOME/.ssh/gogs.pub
fi

prefix="https://"
sshhost=${GOGS_ROOT_URL#$prefix}

sbody=$(cat <<-END

Host $sshhost 
    IdentityFile ~/.ssh/gogs.pub

END
)
 
if [ -f $HOME/.ssh/$GOGS_REPO-sended ]; then
    printf "Key sended\n" >&2
else
    printf "Prepare to send key\n" >&2
    title=$rname@$(hostname)
    printf "title $title\n" >&2
    deploykey=$(cat $HOME/.ssh/gogs.pub)
	body=$(cat <<-END
		{
			"title": "$title",
			"key": "$deploykey"
		}
	END
    )
    prefix="https://"
    sshhost=${GOGS_ROOT_URL#$prefix}

	curl -H "Content-Type: application/json" \
		 -H "Authorization: token $GOGS_TOKEN" \
		 -d "$body" \
		 $GOGS_ROOT_URL/api/v1/repos/$GOGS_USER/$GOGS_REPO/keys > /dev/null
    touch $HOME/.ssh/$GOGS_REPO-sended
    echo "$sbody" >> $HOME/.ssh/config

    echo "Almost done. Enter clone repository target dir [ENTER]"
    read cdir
    git clone ssh://gogs@$sshhost:65522/$GOGS_USER/$GOGS_REPO $cdir
fi