#!/usr/bin/env sh

INPUT_PATH=
CONFIG_PATH=
HOSTNAME=
PORT=
USER=
IDENTITY=
HOSTKEY=

save_input() {
    input_file="$(mktemp -tp /tmp)"
    cat > "$input_file" <&0
    echo "$input_file"
    return 0
}

read_config() {
    HOSTNAME="$(jq -r .source.hostname < "$1")"
    PORT="$(jq -r '.source.port // "22"' < "$1")"
    USER="$(jq -r .source.user < "$1")"
    IDENTITY="$(jq -r .source.identity < "$1")"
    HOSTKEY="$(jq -r .source.hostkey < "$1")"
    return 0
}

write_config() {
    directory="$(mktemp -dp /tmp)"
    config="$directory/config"
    identity_file="$directory/identity"
    knownhosts_file="$directory/knownhosts"

    {
        echo "host $HOSTNAME"
        echo "    HostName $HOSTNAME"
        echo "    Port $PORT"
        echo "    User $USER"
        echo "    IdentityFile $identity_file"
        echo "    UserKnownHostsFile $knownhosts_file"
    } > "$config"
    echo "$IDENTITY" > "$identity_file"
    echo "$HOSTKEY" > "$knownhosts_file"
    chmod 600 "$identity_file" "$knownhosts_file" "$config"
    echo "$config"
    return 0
}

INPUT_PATH="$(save_input)"
read_config "$INPUT_PATH"
CONFIG_PATH="$(write_config)"

export INPUT_PATH
export CONFIG_PATH

get_version() {
    jq -r '.version // []' < "$INPUT_PATH"
}

get_files() {
    jq -r '.source.files?[]' < "$INPUT_PATH"
}