zplug/autoload/utils/__releases__

#!/bin/zsh

__import "core/core"
__import "print/print"

local    index
local    update=false
local -i ret=0
local -a candidates_list binaries
local    repository
local    tag_at tag_use
local    bit one_uri artifact
local    curl url_format
local    curl2 url_format2
local    repo command_name

while (( $# > 0 ))
do
    case "$1" in
        --use)
            tag_use="$2"; shift
            if [[ $tag_use == '*.zsh' ]]; then
                tag_use=
            fi
            ;;
        --at)
            tag_at="$2"; shift
            ;;
        -*|--*)
            __zplug::print::print::die "$1: Unknown option\n"
            return 1
            ;;
        *)
            repository="$1"
            ;;
    esac
    shift
done

# Initialize
{
    if [[ ! $repository =~ ^[A-Za-z0-9._-]+/[A-Za-z0-9._-]+$ ]]; then
        __zplug::print::print::die "$repository: invalid repository type\n"
        return 1
    fi
    if [[ $tag_at == master ]]; then
        tag_at="latest"
    fi
    if [[ -n $tag_at && $tag_at != "latest" ]]; then
        tag_at="tag/$tag_at"
    else
        tag_at="latest"
    fi

    url_format="https://github.com/$repository/releases/$tag_at"
    if (( $+commands[curl] )); then
        curl="curl -fsSL"
        curl2="curl -L -O"
    elif (( $+commands[wget] )); then
        curl="wget -qO -"
        curl2="wget"
    fi

    # Get machine information
    is_64() { uname -m | grep -q "64$" }
    if is_64; then
        bit="64"
    else
        bit="386"
    fi

    if [[ -n $tag_use ]]; then
        tag_use="$(__zplug::core::core::glob2regexp "$tag_use")"
    else
        tag_use="$(__zplug::core::core::get_os)"
        if __zplug::core::core::is_osx; then
            tag_use="(darwin|osx)"
        fi
    fi
}

{
    eval "$curl $url_format" 2>/dev/null \
        | grep -o '/'"$repository"'/releases/download/[^"]*' \
        | read -d '\n' -A candidates_list
    if (( $#candidates_list == 0 )); then
        __zplug::print::print::die "$repository: there are no available releases\n"
        return 1
    fi

    echo "${(F)candidates_list}" \
        | grep -E "${tag_use:-}" \
        | grep "$bit" \
        | head -n 1 \
        | read one_uri
    if [[ -z $one_uri ]]; then
        __zplug::print::print::die "$repository: repository not found\n"
        return 1
    fi

    # For updating
    repo="$ZPLUG_HOME/repos/$repository"
    command_name="${repo:t}"
    if [[ -d $repo ]]; then
        # Update
        if [[ -f $repo/INDEX ]]; then
            index="$(<"$repo/INDEX")"
            if [[ $tag_at == "latest" ]]; then
                if grep -q "$index" <<<"$one_uri"; then
                    # up-to-date
                    return 4
                else
                    :
                fi
            else
                # up-to-date
                return 1
            fi
        fi
    else
        # Not update
        mkdir -p "$repo"
    fi
}

# Finalize
(
    builtin cd -q "$repo"
    url_format2="https://github.com$one_uri"
    eval "$curl2 $url_format2" &>/dev/null
    artifact="${one_uri:t}"

    case "$artifact" in
        *.zip)
            unzip "$artifact" &>/dev/null
            rm -f "$artifact"
            ;;
        *.tar.gz|*.tgz)
            tar xvf "$artifact" &>/dev/null
            rm -f "$artifact"
            ;;
        *.*)
            __zplug::print::print::die "$artifact: Unknown format\n"
            return 1
            ;;
        *)
            # Through
            ;;
    esac

    file **/*(N-.) \
        | awk -F: '$2 ~ /executable/{print $1}' \
        | read -d '\n' -A binaries

    if (( $#binaries == 0 )); then
        __zplug::print::print::die "$command_name: failed to grab binaries from GitHub Releases\n"
        return 1
    fi
    mv -f "$binaries[1]" "$command_name"
    chmod 755 "$command_name"
    rm -rf *~"$command_name"(N)

    if [[ -x $command_name ]]; then
        __zplug::print::print::put "$command_name: Installed successfully\n"
    else
        __zplug::print::print::die "$command_name: Failed to install\n"
        ret=1
    fi
    # builtin cd -q "$OLDPWD"
    echo "${one_uri:h:t}" >"$repo/INDEX"
)

return $ret