autoupdate

#!/bin/bash
set -e

# Originally writtten by Stefans Mezulis <stefans.mezulis@gmail.com> for
# https://github.com/pipeseroni/packaging-aur
# Released into the public domain via the CC0 waiver.

release_url="https://api.github.com/repos/pipeseroni/%s/releases"
aur_url="ssh://aur@aur.archlinux.org/%s.git"

# Get the current tag from github, update PKGBUILD and checksums.

for branch in $(git for-each-ref refs/heads --format='%(refname:short)'); do
    # Check for a valid branch
    case "$branch" in
        pipes.*)
            repo="$branch"
            ;;
        *) continue;;
    esac

    # Switch to the branch
    git checkout "$branch"

    # Retrieve version information from GitHub
    new_version=$(\
        wget -q $(printf "$release_url" "$repo") -O - \
        | jq -r '.[0].tag_name' \
        | sed 's/^v//')

    # Retrieve current version from the PKGBUILD
    current_version=$(sed -n 's/^pkgver=\(.*\)$/\1/p' PKGBUILD)

    if [[ "$new_version" != "$current_version" ]]; then
        # Bump verison number
        sed -i "s/^pkgver=.*$/pkgver=$new_version/" PKGBUILD

        # Bump checksums
        updpkgsums
        makepkg --printsrcinfo > .SRCINFO

        # Add files to index
        git add PKGBUILD .SRCINFO

        # Generate informative comment for the commit message.
        commit_comments=$(git diff --staged | sed 's/^/# /')
        git commit -t <(\
            printf "Bump version from %s → %s\n\n%s\n" \
            "$current_version" \
            "$new_version" \
            "$commit_comments")

        # Should this be pushed to the AUR?
        read -n1 -p "Push to AUR? [y/N] " push
        if [[ "$push" == "y" || "$push" == "Y" ]]; then
            # Add remote to git
            git remote add \
                "$branch" \
                "$(printf "$aur_url" "$branch")" \
                2>/dev/null || true
            git push "$branch" "$branch:master"
        fi
    fi
done

# Return to master
git checkout master