#!/bin/bash

OWNER=medo64
REPOSITORY=wrtsettings
TOKEN=`cat ~/GitHub.token 2> /dev/null`

if [[ "$TOKEN" == "" ]]; then
    echo "No GitHub token found." >&2
    exit 1
fi

VERSION_HASH=`git log -n 1 --format=%h`
VERSION_NUMBER=`git rev-list --count HEAD`
FILE_PREFIX=$REPOSITORY-rev$VERSION_NUMBER-$VERSION_HASH


BRANCH=`git rev-parse --abbrev-ref HEAD`

if [[ "$BRANCH" == "master" ]]; then
    UNCOMMITED_FILE_COUNT=`git ls | sed 1d | wc -l`
    if [[ $UNCOMMITED_FILE_COUNT == 0 ]]; then
        git push --dry-run 2>&1 | grep --quiet "Everything up-to-date"
        if [[ $? == 0 ]]; then
            ./Publish.cmd

            for FILE_EXTENSION in "exe" "zip"; do
                if [ ! -e ../Releases/$FILE_PREFIX.$FILE_EXTENSION ]; then                
                    echo "Executables cannot be found." >&2
                    exit 1
                fi
            done

            RELEASE_URL=`curl -s -H "Authorization: token $TOKEN" https://api.github.com/repos/$OWNER/$REPOSITORY/releases/tags/latest | grep "\"url\"" | head -1 | cut -d\" -f4`
            if [[ "$RELEASE_URL" != "" ]]; then
                curl -s -H "Authorization: token $TOKEN" -X DELETE $RELEASE_URL
            fi
        
            git push origin :refs/tags/latest 2> /dev/null
            
            ASSET_UPLOAD_URL=`curl -s -H "Authorization: token $TOKEN" --data "{\"tag_name\": \"latest\", \"target_commitish\": \"master\", \"name\": \"Most recent build\", \"body\": \"This is the most recent automated build (#$VERSION_HASH, revision $VERSION_NUMBER).\n\nFor the latest stable release go to https://www.medo64.com/$REPOSITORY/.\", \"draft\": false, \"prerelease\": true}" -X POST https://api.github.com/repos/$OWNER/$REPOSITORY/releases | grep "\"upload_url\"" | cut -d\" -f4 | cut -d{ -f1`
            for FILE_EXTENSION in "exe" "zip"; do
                UPLOAD_RESULT=`curl -s -H "Authorization: token $TOKEN" -H "Content-Type: application/octet-stream" --data-binary @../Releases/$FILE_PREFIX.$FILE_EXTENSION -X POST $ASSET_UPLOAD_URL?name=$FILE_PREFIX.$FILE_EXTENSION`
                echo $UPLOAD_RESULT | grep --quiet "browser_download_url"
                if [[ $? == 0 ]]; then
                    echo "$FILE_PREFIX.$FILE_EXTENSION"
                else
                    echo "Failed upload for $FILE_PREFIX.$FILE_EXTENSION" >&2

                    RELEASE_URL=`curl -s -H "Authorization: token $TOKEN" https://api.github.com/repos/$OWNER/$REPOSITORY/releases/tags/latest | grep "\"url\"" | head -1 | cut -d\" -f4`
                    curl -s -H "Authorization: token $TOKEN" -X DELETE $RELEASE_URL
                    
                    exit 1;
                fi
            done
            echo
            echo "https://github.com/medo64/$REPOSITORY/releases/tag/latest"
        else
            echo "Not all changes have been pushed to origin." >&2
            exit 1
        fi
    else
        echo "Not all modified files are commited." >&2
        exit 1
    fi
else
    echo "Not in master branch." >&2
    exit 1
fi