gitommix/git-ommix

#!/bin/env bash

# © Copyright 2024 Maxime Wack
# This file is part of git ommix.

# Git ommix 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.

# Git ommix 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/>.

###############################################################################
# Use bash "strict mode"

set -uo pipefail
IFS=$'\n\t'

###############################################################################
# Load git ommix functions
# Load global and local settings if they exist

# Save env variables
envs=$(env | grep ^GIT_OMMIX)

TEST_OMMIX="${TEST_OMMIX:-}"
if [[ "$TEST_OMMIX" ]]; then
    source $(dirname $0)/functions
else
    source /usr/share/git-ommix/functions
fi

[[ -f "/etc/gitommix.conf" ]] && source "/etc/gitommix.conf"
[[ -f "$HOME/.config/gitommix.conf" ]] && source "$HOME/.config/gitommix.conf"

# Restore env variables after config load
eval $envs

###############################################################################
# Parse arguments
# Initialize default values

# If no arg, full help
(( $# > 0 )) || usage root
VERB="$1"

# If no object, help for the verb
(( $# > 1 )) || usage "$VERB"
OBJECT="$2"
shift 2

# Default values
PROVIDER="${PROVIDER:-}"
METHOD=
PATIENT="${PATIENT:-}"
SAMPLE="${SAMPLE:-}"
DATE="${DATE:-$(date +'%Y-%m-%dT%H:%M:%S')}"
ID=$(base64 /dev/urandom | tr --delete "/+=" | head --bytes=10)
INVALIDATE=()
USE=()
REVISION_OF=
MESSAGE2=
DEBUG="${DEBUG:-}"

# Declare global vars
HASH=()
NAME=()

###############################################################################
# GETOPT
#
# Test getopt
# Allow a command to fail with !’s side effect on errexit
# Use return value from ${PIPESTATUS[0]}, because ! hosed $?
#
# Set getopt short and long options
# -temporarily store output to be able to check for errors
# -activate quoting/enhanced mode (e.g. by writing out “--options”)
# -pass arguments only via   -- "$@"   to separate them correctly
#
# Read getopt’s quoted output

! getopt --test > /dev/null
[[ ${PIPESTATUS[0]} -eq 4 ]] || die 'I’m sorry, `getopt --test` failed in this environment.'

OPTIONS=p:s:m:dv
LONGOPTS=provider:,method:,patient:,sample:,date:,id:,invalidate:,use:,revision_of:,message:,debug,dry,verbose

! PARSED=$(getopt --options=$OPTIONS --longoptions=$LONGOPTS --name "git-ommix" -- "$@")
[[ ${PIPESTATUS[0]} -eq 0 ]] || usage root

eval set -- "$PARSED"

###############################################################################
# Read the options and set the parameters values
# USE and INVALIDATE can be called multiple times
# and the values are stored in an array

while true; do
    case "$1" in
        --provider)
            PROVIDER="$2"
            shift 2
            ;;
        --method)
            METHOD="$2"
            shift 2
            ;;
        -p|--patient)
            PATIENT="$2"
            shift 2
            ;;
        -s|--sample)
            SAMPLE="$2"
            shift 2
            ;;
        --date)
            DATE="$2"
            shift 2
            ;;
        --id)
            ID="$2"
            shift 2
            ;;
        --use)
            USE+=("$2")
            shift 2
            ;;
        --invalidate)
            INVALIDATE+=("$2")
            shift 2
            ;;
        --revision_of)
            REVISION_OF="$2"
            shift 2
            ;;
        -m|--message)
            MESSAGE2="$2"
            shift 2
            ;;
        -d|--debug)
            DEBUG="debug"
            shift
            ;;
        --dry)
            DEBUG="dry"
            shift
            ;;
        -v|--verbose)
            DEBUG="verbose"
            shift
            ;;
        --)
            shift
            break
            ;;
        *)
            echo "Programming error"
            exit 3
            ;;
    esac
done

# Replace AUTHOR with PROVIDER if given
AUTHOR="${PROVIDER:-$GIT_OMMIX_DEFAULT_AUTHOR}"
PROVIDER="${PROVIDER%% <*}"
PROVIDER="${PROVIDER/ /_}"

# The remaining arguments will be files when adding data|result
# or a list of commit hashes or name when listing
# If no file is given, use '*'
QUERY=("${1:-}")
FILES=("${@:-*}")
HASHES=("${@:-}")

[[ "$HASHES" == "-" ]] && HASHES="$(cat /dev/stdin)"

# Output parameter values for debug
[[ "$DEBUG" == "debug" ]] && echo "####################################
Verb: $VERB
Object: $OBJECT
Provider: $PROVIDER
Author: $AUTHOR
Method: $METHOD
Patient: $PATIENT
Sample: $SAMPLE
Date: $DATE
Id: $ID
Use: ${USE[@]}
Invalidate: ${INVALIDATE[@]}
Revision_of: $REVISION_OF
Message: $MESSAGE2
Files: ${FILES[@]}
Hashes: ${HASHES[@]}
"

###############################################################################
# Setup git ommix
# Record the current directory for file operations
# Create the git ommix directory if it doesn't exist yet and cd

CURRENT_DIR="$PWD"
mkdir -p "$GIT_OMMIX_REPO_DIR" || die "Unable to create the git ommix base directory at: $GIT_OMMIX_REPO_DIR
Please check your permissions"
cd "$GIT_OMMIX_REPO_DIR" || die "Unable to access the git ommix base directory at: $GIT_OMMIX_REPO_DIR
Please check your permissions"

###############################################################################
# Run the given verb

case "$VERB" in
     add) add;;
     list) list;;
     get) get;;
     # Unknown verb -> usage root
     *) usage root;;
esac