refactor: Rename AFTN struct field from "Text" to "Body"

internal/parsers/aviation_parser.go

@@ -0,0 +1,77 @@
+package parsers
+
+import (
+	"caatsm/internal/domain"
+	"strings"
+)
+
+// ParseHeader parses the header of the message and returns a ParsedMessage struct
+func ParseHeader(fullMessage string) domain.ParsedMessage {
+	var (
+		startIndicator     string
+		messageID          string
+		dateTime           string
+		priorityIndicator  string
+		primaryAddress     string
+		secondaryAddresses []string
+		originator         string
+		originatorDateTime string
+		bodyAndFooter      strings.Builder
+		headerEnded        bool
+	)
+
+	fullMessage = strings.TrimSpace(fullMessage)
+	lines := strings.Split(fullMessage, "\n")
+
+	for lineCounter, line := range lines {
+		switch lineCounter {
+		case 0:
+			if strings.HasPrefix(line, "ZCZC") {
+				parts := strings.Fields(line)
+				if len(parts) >= 3 {
+					startIndicator = parts[0]
+					messageID = parts[1]
+					dateTime = parts[2]
+				}
+			}
+		case 1:
+			parts := strings.Fields(line)
+			if len(parts) >= 2 {
+				priorityIndicator = parts[0]
+				primaryAddress = parts[1]
+			}
+		default:
+			if !headerEnded {
+				if strings.TrimSpace(line) == "." {
+					continue
+				} else if strings.HasPrefix(line, ".") {
+					originatorInfo := strings.Fields(line[1:])
+					if len(originatorInfo) >= 2 {
+						originator = originatorInfo[0]
+						originatorDateTime = originatorInfo[1]
+					}
+					headerEnded = true
+				} else if strings.HasPrefix(line, "BEGIN PART") || strings.HasPrefix(line, "(") {
+					headerEnded = true
+					bodyAndFooter.WriteString(line + "\n")
+				} else {
+					secondaryAddresses = append(secondaryAddresses, line)
+				}
+			} else {
+				bodyAndFooter.WriteString(line + "\n")
+			}
+		}
+	}
+
+	return domain.ParsedMessage{
+		StartIndicator:     startIndicator,
+		MessageID:          messageID,
+		DateTime:           dateTime,
+		PriorityIndicator:  priorityIndicator,
+		PrimaryAddress:     primaryAddress,
+		SecondaryAddresses: secondaryAddresses,
+		Originator:         originator,
+		OriginatorDateTime: originatorDateTime,
+		BodyAndFooter:      bodyAndFooter.String(),
+	}
+}