#!/usr/bin/env bash

# s3cmd.sh - upload files to S3 compatible object storage via s3cmd.
# Copyright (c) 2022 ge <https://nixhacks.net/>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

tgt_s3cmd() {
    # Upload files location from __main_target_path to object storage
    # using s3cmd(1). Handle 's3' URI scheme.
    #
    # Usage: tgt_s3cmd URI

    log "Run handler ${FUNCNAME[0]}()"

    local uri

    uri="$1"

    if [[ "${uri%%:*}" != 's3' ]]; then
        log -p "Error: Wrong URI scheme: ${uri%%:*}" >&2; exit 1
    fi

    is_installed s3cmd

    if [[ "${uri: -1}" != '/' ]]; then
        uri="$uri/" # Add trailing slash
    fi

    s3cmd_options="${s3cmd_options:---preserve --quiet --no-progress}"

    # Set s3cmd comand. See s3cmd(1)
    if  [ -n "$s3_access_key" ] && \
        [ -n "$s3_secret_key" ] && \
        [ -n "$s3_host" ]       && \
        [ -n "$s3_host_bucket" ]
    then
        s3_region="${s3_region:-na}" # fallback to 'not available' region
        # Use parameters provided from backup script
        # shellcheck disable=SC2154,SC2086
        set -- s3cmd $s3cmd_options \
            --access_key="$s3_access_key" \
            --secret_key="$s3_secret_key" \
            --region="$s3_region" \
            --host="$s3_host" \
            --host-bucket="$s3_host_bucket" \
            put "${backups[@]}" "$uri"
    else
        # Use configuration file
        s3cmd_config="${s3cmd_comfig:-$HOME/.s3cfg}"
        # shellcheck disable=SC2154,SC2086
        set -- s3cmd $s3cmd_options --config "$s3cmd_config" \
            put "${backups[@]}" "$uri"
    fi

    echo "Run command: $*" |
        sed -E 's/--secret_key=[a-zA-Z0-9]+ /--secret_key=xxx /' | log
        # ^^^ hide secret_key from output ^^^

    # Upload backups
    # shellcheck disable=SC2154
    #"$@" 2>> "$log_file"
    "$@" 2>> "$log_file"
}