package engine

import (
	"fmt"
	"strings"
)

// ParseKeyValueFormat parses key:value format from text
// Each line should be "key:value" or "key: value" (whitespace trimmed)
// If skipComments=true, lines starting with # are ignored
// Empty lines are always skipped
func ParseKeyValueFormat(data string, skipComments bool) (map[string]string, error) {
	fields := make(map[string]string)
	lines := strings.Split(data, "\n")

	for i, line := range lines {
		// Trim whitespace
		line = strings.TrimSpace(line)

		// Skip empty lines
		if line == "" {
			continue
		}

		// Skip comments if requested
		if skipComments && strings.HasPrefix(line, "#") {
			continue
		}

		// Split on first ':'
		parts := strings.SplitN(line, ":", 2)
		if len(parts) != 2 {
			return nil, fmt.Errorf("line %d: invalid format (expected 'key:value')", i+1)
		}

		key := strings.TrimSpace(parts[0])
		value := strings.TrimSpace(parts[1])

		fields[key] = value
	}

	return fields, nil
}