package parser

import (
	"fmt"
)

// ParsedMessage is the result of parsing an incoming notification body.
type ParsedMessage struct {
	Event string
	Data  map[string]interface{} // field name → value, passed to template
	Body  string                 // raw body (for text mode)
}

// Parser converts a raw HTTP body into a ParsedMessage.
type Parser interface {
	Parse(body []byte) (*ParsedMessage, error)
}

func NewParser(parseMode string, parsePattern string) (Parser, error) {
	switch parseMode {
	case "json":
		return &JSONParser{}, nil
	case "regex":
		if parsePattern == "" {
			return nil, fmt.Errorf("regex parse mode requires parse_pattern")
		}
		return NewRegexParser(parsePattern)
	case "text":
		return &TextParser{}, nil
	default:
		return nil, fmt.Errorf("unknown parse_mode: %s", parseMode)
	}
}