more stuff

server/letterhead.go

@@ -0,0 +1,114 @@
+package server
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/Theodor-Springmann-Stiftung/lenz-web/xmlmodels"
+)
+
+type letterHeadModel struct {
+	Number      int
+	DateText    string
+	IsDraft     bool
+	HasOriginal bool
+	Pairs       []letterHeadPairModel
+}
+
+type letterHeadPairModel struct {
+	Sent     string
+	Received string
+}
+
+func buildLetterHead(lib *xmlmodels.Library, meta *xmlmodels.Meta) letterHeadModel {
+	head := letterHeadModel{
+		Pairs: make([]letterHeadPairModel, 0),
+	}
+	if meta == nil {
+		return head
+	}
+
+	head.Number = meta.Letter
+	head.IsDraft = meta.IsDraft.IsTrue()
+	head.HasOriginal = meta.HasOriginal.IsTrue()
+
+	if earliest := meta.Earliest(); earliest != nil {
+		head.DateText = strings.TrimSpace(earliest.Text)
+	}
+
+	for _, pair := range meta.SendReceivedPairs() {
+		sentNames := resolveNames(lib, pair.Sent.Persons, true)
+
+		receivedText := "Unbekannt"
+		if pair.Received != nil {
+			receivedNames := resolveNames(lib, pair.Received.Persons, true)
+			receivedPlaces := resolveNames(lib, pair.Received.Places, false)
+
+			if len(receivedNames) > 0 {
+				receivedText = joinGerman(receivedNames)
+			} else if len(receivedPlaces) > 0 {
+				receivedText = joinGerman(receivedPlaces)
+			} else {
+				receivedText = ""
+			}
+
+			if len(receivedPlaces) > 0 && len(receivedNames) > 0 {
+				receivedText += " (" + joinGerman(receivedPlaces) + ")"
+			}
+		}
+
+		head.Pairs = append(head.Pairs, letterHeadPairModel{
+			Sent:     joinGerman(sentNames),
+			Received: receivedText,
+		})
+	}
+
+	return head
+}
+
+func resolveNames(lib *xmlmodels.Library, refs []xmlmodels.RefElement, person bool) []string {
+	ret := make([]string, 0, len(refs))
+	for _, ref := range refs {
+		name := ""
+		if person {
+			if def := lib.Person(ref.Reference); def != nil {
+				name = strings.TrimSpace(def.Name)
+				if name == "" {
+					name = strings.TrimSpace(def.FirstName + " " + def.LastName)
+				}
+			}
+		} else {
+			if def := lib.Place(ref.Reference); def != nil {
+				name = strings.TrimSpace(def.Name)
+			}
+		}
+
+		if name == "" {
+			name = strings.TrimSpace(ref.Text)
+		}
+		if name == "" && ref.Reference > 0 {
+			if person {
+				name = "Person " + strconv.Itoa(ref.Reference)
+			} else {
+				name = "Ort " + strconv.Itoa(ref.Reference)
+			}
+		}
+		if name != "" {
+			ret = append(ret, name)
+		}
+	}
+	return ret
+}
+
+func joinGerman(items []string) string {
+	switch len(items) {
+	case 0:
+		return ""
+	case 1:
+		return items[0]
+	case 2:
+		return items[0] + " und " + items[1]
+	default:
+		return strings.Join(items[:len(items)-1], ", ") + " und " + items[len(items)-1]
+	}
+}