From c772716e98e11181d301deadeca52856ac18f085 Mon Sep 17 00:00:00 2001
From: Feuerfuchs <git@feuerfuchs.dev>
Date: Mon, 18 May 2020 18:51:19 +0200
Subject: Improved Gemini support

---
 internal/port/gemini.go | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

(limited to 'internal/port/gemini.go')

diff --git a/internal/port/gemini.go b/internal/port/gemini.go
index 740fccd..f67ca05 100644
--- a/internal/port/gemini.go
+++ b/internal/port/gemini.go
@@ -29,8 +29,9 @@ type GeminiTemplateVariables struct {
 }
 
 type GeminiNavItem struct {
-	Label string
-	URL   string
+	Label   string
+	URL     string
+	Current bool
 }
 
 type GeminiSection struct {
@@ -40,6 +41,32 @@ type GeminiSection struct {
 	Items []string
 }
 
+func urlToGeminiNav(url string) (items []GeminiNavItem) {
+	partialURL := "/gemini"
+	parts := strings.Split(url, "/")
+
+	if len(parts) != 0 && parts[len(parts)-1] == "" {
+		parts = parts[:len(parts)-1]
+	}
+
+	for i, part := range parts {
+		partialURL = partialURL + "/" + part
+
+		current := false
+		if i == len(parts)-1 || (len(parts) == 2 && i == 0) {
+			current = true
+		}
+
+		items = append(items, GeminiNavItem{
+			Label:   part,
+			URL:     partialURL,
+			Current: current,
+		})
+	}
+
+	return
+}
+
 func resolveURL(uri string, baseURL *url.URL) (resolvedURL string) {
 	if strings.HasPrefix(uri, "//") {
 		resolvedURL = "/gemini/" + strings.TrimPrefix(uri, "//")
@@ -137,6 +164,7 @@ func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, ass
 					Type: libgemini.RAW_TEXT.String(),
 					Text: fmt.Sprintf("Error: %s", err),
 				}},
+				Nav:     urlToGeminiNav(hostport),
 				IsPlain: true,
 			}); e != nil {
 				log.Println("Template error: " + e.Error())
@@ -167,6 +195,7 @@ func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, ass
 					Type: libgemini.RAW_TEXT.String(),
 					Text: fmt.Sprintf("Error: %s", err),
 				}},
+				Nav:     urlToGeminiNav(fmt.Sprintf("%s/%s", hostport, uri)),
 				IsPlain: true,
 			}); e != nil {
 				log.Println("Template error: " + e.Error())
@@ -190,6 +219,7 @@ func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, ass
 						Type: libgemini.RAW_TEXT.String(),
 						Text: fmt.Sprintf("Error: %s", err),
 					}},
+					Nav:     urlToGeminiNav(fmt.Sprintf("%s/%s", hostport, uri)),
 					IsPlain: true,
 				}); e != nil {
 					log.Println("Template error: " + e.Error())
@@ -211,6 +241,7 @@ func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, ass
 					Type: libgemini.RAW_TEXT.String(),
 					Text: fmt.Sprintf("Error %d: %s", res.Header.Status, res.Header.Meta),
 				}},
+				Nav:     urlToGeminiNav(fmt.Sprintf("%s/%s", hostport, uri)),
 				IsPlain: true,
 			}); err != nil {
 				log.Println("Template error: " + err.Error())
@@ -252,6 +283,7 @@ func GeminiHandler(tpl *template.Template, robotsdata *robotstxt.RobotsData, ass
 				URL:      fmt.Sprintf("%s/%s", hostport, uri),
 				Assets:   assetList,
 				Sections: sections,
+				Nav:      urlToGeminiNav(fmt.Sprintf("%s/%s", hostport, uri)),
 				IsPlain:  isPlain,
 			}); err != nil {
 				log.Println("Template error: " + err.Error())
-- 
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