Comment by nadaviv

GPT is pretty good at figuring out argument parsing code based on example CLI usage. Like this:

    > Write bash code to parse the following arguments:
    >
    > $ ./export.sh --out-file dump.json --db foo.sqlite --include-headers --exclude-rev -vvv -p9000

    Here's an example bash code to parse the arguments:

    #!/bin/bash

    # Default values for optional arguments
    INCLUDE_HEADERS=false
    EXCLUDE_REV=false
    VERBOSE_LEVEL=0
    PORT=0

    # Parse the arguments
    while [[ "$#" -gt 0 ]]; do
        case $1 in
        --out-file) OUT_FILE="$2"; shift ;;
        --db) DB="$2"; shift ;;
        --include-headers) INCLUDE_HEADERS=true ;;
        --exclude-rev) EXCLUDE_REV=true ;;
        -v) VERBOSE_LEVEL=$((VERBOSE_LEVEL+1)) ;;
        -p) PORT="$2"; shift ;;
        -h|--help) 
            echo "Usage: ./export.sh [OPTIONS]"
            echo ""
            echo "Options:"
            echo "--out-file     Output file path (required)"
            echo "--db           Database path (required)"
            echo "--include-headers  Include column headers in output (default: false)"
            echo "--exclude-rev   Exclude revisions in output (default: false)"
            echo "-v              Increase verbosity level (default: 0)"
            echo "-p              Port number (default: 0)"
            echo "-h, --help      Show help"
            exit 0
            ;;
        *) echo "Unknown parameter passed: $1"; exit 1 ;;
        esac
        shift
    done

    # Check required arguments
    if [[ -z $OUT_FILE ]]; then
        echo "Error: missing argument --out-file"
        exit 1
    fi

    if [[ -z $DB ]]; then
        echo "Error: missing argument --db"
        exit 1
    fi

    # Print parsed arguments
    echo "OUT_FILE=$OUT_FILE"
    echo "DB=$DB"
    echo "INCLUDE_HEADERS=$INCLUDE_HEADERS"
    echo "EXCLUDE_REV=$EXCLUDE_REV"
    echo "VERBOSE_LEVEL=$VERBOSE_LEVEL"
    echo "PORT=$PORT"