#!/bin/bash
# oneliner — complex pipe chains from plain English, powered by Apple Intelligence
#
# Usage:  oneliner "sum the third column of a CSV"
#         oneliner -x "count unique IPs in access.log"    # execute (asks confirm)
#         oneliner -c "remove duplicate lines"            # copy to clipboard
#
# Requires: apfel installed (https://github.com/Arthur-Ficial/apfel)

EXECUTE=false
COPY=false

while [[ $# -gt 0 ]]; do
    case "$1" in
        -x|--execute)  EXECUTE=true; shift ;;
        -c|--copy)     COPY=true; shift ;;
        -h|--help)
            echo "oneliner — complex pipe chains from plain English"
            echo ""
            echo "Usage: oneliner [OPTIONS] \"description\""
            echo ""
            echo "  -x, --execute  Run the command (asks confirmation first)"
            echo "  -c, --copy     Copy command to clipboard"
            echo "  -h, --help     Show this help"
            echo ""
            echo "Examples:"
            echo "  oneliner \"sum the third column of a CSV\""
            echo "  oneliner -x \"count unique IPs in access.log\""
            echo "  oneliner -c \"extract all URLs from a file\""
            echo ""
            echo "Specializes in: awk, sed, find, xargs, sort, uniq,"
            echo "grep, cut, tr, jq, and complex pipe chains."
            echo ""
            echo "Requires: apfel (Apple Intelligence CLI)"
            exit 0
            ;;
        -*) echo "Unknown option: $1. Use --help."; exit 1 ;;
        *)  break ;;
    esac
done

if [[ -z "$1" ]]; then
    echo "Usage: oneliner \"what you need\""
    echo "       oneliner --help for more options"
    exit 1
fi

# Check apfel is installed
if ! command -v apfel &>/dev/null; then
    echo "Error: apfel not found. Install from https://github.com/Arthur-Ficial/apfel"
    exit 1
fi

SYSTEM="You generate UNIX one-liners for macOS (zsh/bash). Output ONLY the command — no explanation, no markdown, no code fences. Prefer awk, sed, grep, sort, uniq, cut, tr, xargs, find, and jq. Use pipes. Keep it to a single line. Never output anything except the command."

result=$(apfel -q -s "$SYSTEM" "$1")
status=$?

if [[ $status -ne 0 ]]; then
    echo "Error: apfel failed (exit $status)" >&2
    exit $status
fi

# Strip any accidental markdown fences the model might add
# Strip markdown fences, ANSI escape sequences, and whitespace
result=$(echo "$result" | sed '/^```/d' | sed 's/\x1b\[[0-9;]*[a-zA-Z]//g' | sed 's/^[[:space:]]*//' | sed '/^$/d')

if $COPY; then
    echo "$result" | pbcopy
    echo -e "\033[90m(copied to clipboard)\033[0m"
fi

echo -e "\033[33m\$\033[0m $result"

if $EXECUTE; then
    echo ""
    read -r -p "Run this? [y/N] " confirm
    if [[ "$confirm" =~ ^[yY]$ ]]; then
        eval "$result"
    fi
fi