StudyManagerV1/studyManager.sh

#!/bin/bash

APPNAME=$(basename $0 | sed "s/\.sh$//")
CONFIGFILE="${XDG_CONFIG_HOME}/studyManager/config"

sm_log_info() {
    echo "$APPNAME: $1" > /dev/tty
}

sm_log_error() {
    echo "$APPNAME: ERROR: $1" > /dev/tty
}

sm_parse_yaml() {
    #
    # Parse yaml provided in $1 and put into array $2
    #

    # Not sufficient arg provided
    if [[ $# -lt 2 ]]
    then
        exit 1
    fi

    # File does not exist
    if [[ ! -f "$1" ]]
    then
        exit 2
    fi

    local -n arr="$2"

    while read -r key val
    do
        str="$key=$val"
        # Remove leading/trailing quote
#        val="${val%\'}"
#        val="${val#\'}"

        arr+=("$key=$val")
    done < <(sed '/:/!d;/^ *#/d;s/:/ /;' < "$1")

    sm_log_info "Successfully parsed $1 into $2"
}

sm_load_yaml_vars() {
    #
    # Define all variables defined in $1
    #

    if [[ $# -eq 0 ]]
    then
        sm_log_error "Insufficient number of arguments"
        exit 1
    fi

    # Todo: error code check is weird
    sm_parse_yaml "$1" config
    if [[ $? -eq 2 ]]
    then
        sm_log_error "Config $1 does not exist, please create it"
        exit 1
    fi

    # Define variables
    for conf in "${config[@]}"
    do
        eval "declare -g ${conf}"
    done

    sm_log_info "Successfully load vars of $1"
}

sm_load_yaml_vars $CONFIGFILE

COURSES=( $( ls $ROOT_COURSE_DIR ) )

sm_usage() {
    local txt=(
        "Utility $APPNAME for managing your studies."
        "Usage: $APPNAME [options]"
        ""
        "Options:"
        "   --help, -h          Print help."
        "   --set-current, -c   Select new course."
        "   --list, -l          List course content."
    )

    printf "%s\n" "${txt[@]}"
}

sm_bad_usage() {
    local message="$1"
    local txt=(
        "For an overview of the command, execute:"
        "$APPNAME --help"
    )

    [[ $message ]] && printf "$message\n"

    printf "%s\n" "${txt[@]}"
}

_sm_gen_courses() {
    local options=""
    for e in "${COURSES[@]}"
    do
        options="${options}${e}\n"
    done
    echo $options
}

sm_link_course() {
    #
    # Propt user to select a course and create symlink for the choosen one
    #

    local selection="$(echo -e $(_sm_gen_courses) | displayer rofi -lines ${#COURSES[@]} -dmenu -p "Current Course" -a 0 -no-custom)"
    echo $selection

    if [[ -z "$selection" ]]
    then
        exit 1
    fi

    src="${ROOT_COURSE_DIR}/${selection}"

    ln --force --symbolic --no-dereference $src $CURRENT_COURSE_DIR
    sm_log_info "Link $src to $CURRENT_COURSE_DIR"
}

_sm_gen_contents() {
    local info_file="$CURRENT_COURSE_DIR/$RELATIVE_INFO_FILE"
    local options=""

    while read -r key val
    do
        str="$key=$val"
        options="${options}${val}\n"
    done < <(sed '/:/!d;/^ *#/d;s/:/ /;' < "$info_file")
    echo $options
}

sm_list_contents() {
    #
    # List course content and copy selected to clipboard
    #

    selection="$(echo -e $(_sm_gen_contents) | displayer rofi -lines 5 -dmenu -p 'Info Content' -a 0 -no-custom)"

    selection="${selection%\'}"
    selection="${selection#\'}"

    echo -n $selection | xclip -selection clipboard
}

sm_timetable() {
    #
    # Use timetable to create task, events etc.
    #

    sm_tt_usage() {
        local txt=(
            "Utility $APPNAME for managing your studies."
            "Usage: $APPNAME import [options]"
            ""
            "Options:"
            "   --help, -h          Print help."
        )

        printf "%s\n" "${txt[@]}"
    }

    sm_tt_bad_usage() {
        local message="$1"
        local txt=(
            "For an overview of the command, execute:"
            "$APPNAME timetable --help"
        )

        [[ $message ]] && printf "$message\n"

        printf "%s\n" "${txt[@]}"
    }

    sm_tt_khal() {
        local info_file="$CURRENT_COURSE_DIR/$RELATIVE_INFO_FILE"
        local timetable_file="$CURRENT_COURSE_DIR/$RELATIVE_TIMETABLE_FILE"

        local start_date="2021-09-20"
        local end_date="2021-12-25"

        sm_load_yaml_vars "${info_file}"
        sm_parse_yaml "${timetable_file}" timetable

        for e in "${timetable[@]}"
        do

            val=${e#*=}
            key=${e%%=*}

            val="${val%\'}"
            val="${val#\'}"

            val=($val)

            local event_date=""

            case "${val[0]}" in
                "Mon")
                    event_date=$(date --date="${start_date} +0 days" +%d/%m/%Y)
                    ;;
                "Tue")
                    event_date=$(date --date="${start_date} +1 days" +%d/%m/%Y)
                    ;;
                "Wed")
                    event_date=$(date --date="${start_date} +2 days" +%d/%m/%Y)
                    ;;
                "Thu")
                    event_date=$(date --date="${start_date} +3 days" +%d/%m/%Y)
                    ;;
                "Fri")
                    event_date=$(date --date="${start_date} +4 days" +%d/%m/%Y)
                    ;;
                "Thu")
                    event_date=$(date --date="${start_date} +5 days" +%d/%m/%Y)
                    ;;
            esac

            command="khal new -a Timetable -r weekly -u $(date --date=${end_date} +%d/%m/%Y) -l ${val[3]//\\0040/' '} $event_date ${val[1]} ${val[2]} ${title} ${key}"

            echo "$command"

            read -p "Run above command [yn]? " -r
            echo
            if [[ $REPLY =~ ^[Yy]$ ]]
            then
                eval "${command}"
            fi
        done
        exit 0
    }

    sm_tt_task() {
        exit 0
    }

    while (( $# ))
    do
        case $1 in
            -h|--help)
                shift
                sm_tt_usage
                exit 0
                ;;
            --khal|-k)
                shift
                sm_tt_khal
                exit 0
                ;;
            --task|-t)
                shift
                sm_tt_task
                exit 0
                ;;
            *)
                sm_tt_bad_usage "Option/command not recognized."
                ;;
        esac
    done

    sm_tt_bad_usage
    exit 1
}

while (( $# ))
do
    case $1 in
        -h|--help)
            shift
            sm_usage
            exit 0
            ;;
        -c|--set-current)
            sm_link_course
            exit 0
            shift
            ;;
        -l|--list)
            sm_list_contents
            exit 0
            shift
            ;;
        timetable)
            command=$1
            shift
            sm_"$command" "$@"
            exit 0
            ;;
        *)
            sm_bad_usage "Option/command not recognized."
            exit 1
            ;;
    esac
    shift
done

sm_bad_usage
exit 1