dev-pack/src/install.sh

#!/bin/bash

e() { printf "%s" "$*"; }

warn() { e "${YELLOW}Warning:$NORMAL" "$*"$'\n' >&2 ; }
info() { e "${BLUE}II$NORMAL" "$*"$'\n' >&2 ; }
verb() { [ -z "$VERBOSE" ] || e "$*"$'\n' >&2; }
debug() { [ -z "$DEBUG" ] || e "$*"$'\n' >&2; }
err() { e "${RED}Error:$NORMAL $*"$'\n' >&2 ; }
die() { err "$@" ; exit 1; }


get_path() { (
    IFS=:
    for d in $PATH; do
        filename="$d/$1"
        [ -f "$filename" -a -x "$filename" ] && {
            echo "$d/$1"
            return 0
        }
    done
    return 1
) }

ANSI_ESC=$'\e['

ansi_color() {
    local choice="$1"

    if [ "$choice" == "tty" ]; then
        if [ -t 1 ]; then
            choice="yes"
        else
            choice="no"
        fi
    fi

    if [ "$choice" != "no" ]; then

        SET_COL_CHAR="${ANSI_ESC}${COL_CHAR}G"
        SET_COL_STATUS="${ANSI_ESC}${COL_STATUS}G"
        SET_COL_INFO="${ANSI_ESC}${COL_INFO}G"
        SET_COL_ELT="${ANSI_ESC}${COL_ELT}G"

        SET_BEGINCOL="${ANSI_ESC}0G"

        UP="${ANSI_ESC}1A"
        DOWN="${ANSI_ESC}1B"
        LEFT="${ANSI_ESC}1D"
        RIGHT="${ANSI_ESC}1C"

        SAVE="${ANSI_ESC}7"
        RESTORE="${ANSI_ESC}8"

        NORMAL="${ANSI_ESC}0m"

        GRAY="${ANSI_ESC}1;30m"
        RED="${ANSI_ESC}1;31m"
        GREEN="${ANSI_ESC}1;32m"
        YELLOW="${ANSI_ESC}1;33m"
        BLUE="${ANSI_ESC}1;34m"
        PINK="${ANSI_ESC}1;35m"
        CYAN="${ANSI_ESC}1;36m"
        WHITE="${ANSI_ESC}1;37m"

        DARKGRAY="${ANSI_ESC}0;30m"
        DARKRED="${ANSI_ESC}0;31m"
        DARKGREEN="${ANSI_ESC}0;32m"
        DARKYELLOW="${ANSI_ESC}0;33m"
        DARKBLUE="${ANSI_ESC}0;34m"
        DARKPINK="${ANSI_ESC}0;35m"
        DARKCYAN="${ANSI_ESC}0;36m"
        DARKWHITE="${ANSI_ESC}0;37m"

        SUCCESS=$GREEN
        WARNING=$YELLOW
        FAILURE=$RED
        NOOP=$BLUE
        ON=$SUCCESS
        OFF=$FAILURE
        ERROR=$FAILURE

    else

        SET_COL_CHAR=
        SET_COL_STATUS=
        SET_COL_INFO=
        SET_COL_ELT=

        SET_BEGINCOL=

        NORMAL=
        RED=
        GREEN=
        YELLOW=
        BLUE=
        GRAY=
        WHITE=

        DARKGRAY=
        DARKRED=
        DARKGREEN=
        DARKYELLOW=
        DARKBLUE=
        DARKPINK=
        DARKCYAN=

        SUCCESS=
        WARNING=
        FAILURE=
        NOOP=
        ON=
        OFF=
        ERROR=

    fi

    ansi_color="$choice"

    export SET_COL_CHAR SET_COL_STATUS SET_COL_INFO SET_COL_ELT \
           SET_BEGINCOL UP DOWN LEFT RIGHT SAVE RESTORE NORMAL \
           GRAY RED GREEN YELLOW BLUE PINK CYAN WHITE DARKGRAY \
           DARKRED DARKGREEN DARKYELLOW DARKBLUE DARKPINK DARKCYAN \
           SUCCESS WARNING FAILURE NOOP ON OFF ERROR ansi_color
}


depends() {
    ## Avoid colliding with variables that are created with depends.
    local __i __path __new_name

    for __i in "$@"; do
        if ! __path=$(get_path "$__i"); then
            __new_name="$(echo "${__i//-/_}")"
            if [ "$__new_name" != "$__i" ]; then
                depends "$__new_name"
            else
                err "dependency check: couldn't find '$__i' required command."
                exit 1
            fi
        else
            if ! test -z "$__path" ; then
                export "$(echo "${__i//- /__}")"="$__path"
            fi
        fi
    done
}

get_os() {
    local uname_output
    uname_output="$(uname -s)"
    case "${uname_output}" in
        Linux*)
            if [[ "$(< /proc/version)" =~ ^.*@(Microsoft|WSL).*$ ]]; then
                e wsl
            elif [[ "$(< /proc/version)" =~ ^.*-microsoft-*$ ]]; then
                e wsl2
            else
                e linux
            fi
            ;;
        Darwin*)  e mac;;
        CYGWIN*)  e cygwin;;
        MINGW*)   e mingw;;
        *)        e "UNKNOWN:${uname_output}";;
    esac
}


OS=$(get_os) || {
    err "Couldn't figure what OS you are running."
    exit 1
}

fn.exists() { declare -F "$1" >/dev/null; }

## copy stdin to file, archive previous existing file if any
install_file() {
    local path="$1" tmpfile
    tmpfile="$(mktemp)"
    cat > "${tmpfile}" || return 1
    mkdir -vp "${path%/*}" || exit 1
    if [[ -e "$path" ]]; then
        if ! diff "${tmpfile}" "${path}";then
            info "File '$path' exists but is different, archiving current content and replacing it."
            candidate="${path}.bak"
            n=1
            while [ -e "$candidate" ]; do
                candidate="${path}.bak.$((n++))"
            done
            echo "Archiving previous version of '$path'"
            mv -v "${path}" "$candidate" || return 1
        else
            info "File '$path' exists and is already with the right content."
        fi
    else
        echo "Creating '${path}'."
        mv "${tmpfile}" "$path" || return 1
    fi
    rm -f "$tmpfile"
}

get_charm_store() {
    if ! [ -d "$CHARM_PATH" ]; then
        echo "Creating charm-store in '$CHARM_PATH'."
        git clone https://git.0k.io/0k-charms.git "$CHARM_PATH" || exit 1
    else
        echo "Updating existing charm-store in '$CHARM_PATH'."
        cd "$CHARM_PATH" || exit 1
        git checkout master &&
            git pull -r || {
                warn "Could not update charm-store, do you have devs ingoing ?"
        }
    fi
}


fetch_binary() {
    local url="$1" name="$2" bin_path tmpfile
    mkdir -p "$BIN_PATH" || return 1
    info "Downloading '$name'..."
    (
        tmpfile=$(mktemp) && trap "rm -f '$tmpfile'" EXIT &&
            curl -sS "$url" > "$tmpfile" &&
            chmod +x "$tmpfile"
        if [ -e "$BIN_PATH/$name" ] && diff "$tmpfile" "$BIN_PATH/$name"; then
            echo "  .. Done (File '$BIN_PATH/$name' was already up to date.)"
        else
            mv "$tmpfile" "$BIN_PATH/$name"
            echo "  .. Done !"
        fi
    ) || return 1
    hash -r
    if bin_path=$(type -p "$name"); then
        if [ "$bin_path" != "$BIN_PATH/$name" ]; then
            warn "Found a '$name' in \$PATH at '$bin_path'." \
                 $'\n'"  That doesn't match expected location '$BIN_PATH/$name'." \
                 $'\n'"  You might need to change you \$PATH to include '$BIN_PATH' before '${bin_path%/*}'."
        fi
    fi
}


install.linux() {
    depends docker curl git

    if [ "$UID" != 0 ]; then
        BIN_PATH=~/bin
        CHARM_PATH=~/.charm-store
        DEFAULT_COMPOSE_YML=~/.compose/etc/compose.yml
        COMPOSE_OPTION_FILE=~/.compose/etc/local.conf
    else
        BIN_PATH=/usr/local/bin
        CHARM_PATH=/srv/charm-store
        DEFAULT_COMPOSE_YML=/etc/compose/compose.yml
        COMPOSE_OPTION_FILE=/etc/compose/local.conf
    fi

    fetch_binary https://git.0k.io/0k-compose.git/plain/bin/compose compose

    if [[ ":$PATH:" != *":$BIN_PATH:"* ]]; then
        warn "Please ensure that '$BIN_PATH' is in your \$PATH to ensure" \
             "the simple usage of 'compose' command."
    fi

    ## CHARMS
    get_charm_store || exit 1

    ##
    ## YYYvlab: following needs to be discussed further with njeudy
    ##


    ## DEFAULT COMPOSE
#     cat <<EOF | install_file "$DEFAULT_COMPOSE_YML"
# odoo:
#   charm: odoo-tecnativa
#   # docker-compose:
#   #   ## Important to keep as a list: otherwise it'll overwrite charm's arguments.
#   #   command:
#   #     - "--log-level=debug"
#   #   environment:
#   #     TOTO: TATA
#   #   image: mynewimage
#   # options:
#   #   workers: 1
#   #   modules:  ## 'base' is automatically added
#   #     - l10n_fr
#   #     - mymodule
#   #   database: mybase  ## defaults to database in relation


# frontend:
#   charm: apache

# EOF

#     cat <<EOF | install_file "$COMPOSE_OPTION_FILE"
# #CHARM_STORE=$CHARM_STORE
# #COMPOSE_DOCKER_IMAGE=docker.0k.io/compose:1.3.0-rc5

# #if [ "${docker_run_opts+x}" ]; then
# #    docker_run_opts+=("-v" "/home/vaab/dev/sh/0k-compose/bin/compose-core:/usr/local/bin/compose-core")
# #fi

# #DEFAULT_COMPOSE_YML=$DEFAULT_COMPOSE_YML
# EOF

}


install.mac() {
    depends docker
    die "Not implemented yet."
}

install.wsl() {
    CHARM_PATH=~/.charm-store
    get_charm_store || return 1
}


install.wsl2() {
    install.linux
}



run() {
    OS="$(get_os)"
    if fn.exists "install.$OS"; then
        "install.$OS"
    else
        echo "System '$OS' not supported yet." >&2
    fi
}

ansi_color tty
run