From b9e7aa782b17b10ce70e17efd7782d4b7647400b Mon Sep 17 00:00:00 2001
From: Nihilazo <nico@itwont.work>
Date: Wed, 27 Jan 2021 20:34:09 +0000
Subject: [PATCH] a day's hacking. it doesn't work.

---
 go.mod  |  4 ++--
 main.go | 55 ++++++++++++++++++++++++++++++++++++++++++-------------
 2 files changed, 44 insertions(+), 15 deletions(-)

diff --git a/go.mod b/go.mod
index ae2c8c1..4b68fe2 100644
--- a/go.mod
+++ b/go.mod
@@ -5,9 +5,9 @@ go 1.15
 require (
 	git.sr.ht/~adnano/go-gemini v0.1.13
 	github.com/fogleman/gg v1.3.0
-	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
 	github.com/shermp/go-fbink-v2 v1.20.2
 	github.com/shermp/go-fbink-v2/v2 v2.21.0
 	github.com/shermp/go-kobo-input v0.0.0-20180928074949-be0734a2dcc6
-	golang.org/x/image v0.0.0-20201208152932-35266b937fa6 // indirect
+	golang.org/x/image v0.0.0-20201208152932-35266b937fa6
 )
diff --git a/main.go b/main.go
index 00bdcc4..f3694c6 100644
--- a/main.go
+++ b/main.go
@@ -1,7 +1,7 @@
 package main
 
 import (
-//    "github.com/fogleman/gg"
+    "github.com/fogleman/gg"
     "github.com/shermp/go-fbink-v2/gofbink"
     "github.com/shermp/go-kobo-input/koboin"
     "image"
@@ -12,6 +12,7 @@ import (
 //	"bytes"
 	"errors"
 	"net/url"
+	"golang.org/x/image/font"
 	"bufio"
 	"io/ioutil"
 	"fmt"
@@ -19,6 +20,8 @@ import (
 	"os"
 	"log"
     "bytes"
+    "github.com/golang/freetype/truetype"
+
 )
 
 var (
@@ -30,12 +33,25 @@ var (
 var height int = 1080
 var width int = 1440 // TODO get from device instead of hardcoding
 
+var f *truetype.Font
+var face font.Face
 
-// drawOSK renders the onscreen keyboard to an image.
-func drawOSK(keymap []string) *image.RGBA {
-	var im image.RGBA
-	
-	return &im
+// drawErrorBox prints the given error on screen, and only proceeds after touch input.
+// Returns an error if drawing an error box (lol) fails.
+// TODO make this work
+func drawErrorBox(e error, fb *gofbink.FBInk, t *koboin.TouchDevice, opts *gofbink.FBInkConfig ) error {
+	h := float64(height/2)
+	w := float64(width)
+	i := image.NewRGBA(image.Rect(width,0,width,height/2))
+	dc := gg.NewContextForRGBA(i)
+	dc.SetFontFace(face)
+	dc.SetRGB(1, 1, 1)
+	dc.Clear()
+	dc.SetRGB(0, 0, 0)
+	dc.DrawStringWrapped(e.Error(), h/2, w/2, 0.5, 0.5, float64(width), 1.0, gg.AlignCenter)
+	fb.PrintRBGA(0, 0, i, opts)
+	t.GetInput()
+	return nil
 }
 
 func trustCertificate(hostname string, cert *x509.Certificate) error {
@@ -112,20 +128,21 @@ func main() {
 	    return
 	}
 	defer t.Close()
+	
 	// Logging setup
 	var logFile, err= os.Create("/mnt/onboard/gemini.log")
 	var logger *log.Logger = log.New(logFile, "gemini", log.LstdFlags )
+	defer logFile.Close()
 
 	path := "/mnt/onboard/.adds/gemini/known-hosts" // TODO don't hardcode
 	
+	// Reload or create known hosts file
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 	  os.Create(path)
-	  fb.Println("Created hosts file")
 	}
-	// Load known hosts file
     err = hosts.Load(path)
 	if err != nil {
-		fb.Println(err)
+		drawErrorBox(err, fb, t, &fbinkOpts)
 		logger.Fatal(err)
 	}
 
@@ -134,16 +151,28 @@ func main() {
 		fb.Println(err)
 		logger.Fatal(err)
 	}
-
+	
+	// Load Fonts, Create font face
+    b, err := ioutil.ReadFile("/mnt/onboard/.adds/gemini/NotoSerif.ttf")
+    if err != nil {
+        logger.Println(err)
+        return
+    }
+    f, err := truetype.Parse(b)
+    if err != nil {
+        logger.Println(err)
+        return
+    }
+    face = truetype.NewFace(f, &truetype.Options{Size:32})
     url := "gemini://gemini.circumlunar.space"
 	req, err := gemini.NewRequest(url)
 	if err != nil {
-		fb.Println(err)
+		drawErrorBox(err, fb, t, &fbinkOpts)
 		logger.Fatal(err)
 	}
 	resp, err := do(req, nil)
 	if err != nil {
-		fb.Println(err)
+		drawErrorBox(err, fb, t, &fbinkOpts)
 		logger.Fatal(err)
 	}
 	defer resp.Body.Close()
@@ -152,7 +181,7 @@ func main() {
 	if resp.Status.Class() == gemini.StatusClassSuccess {
 		body, err := ioutil.ReadAll(resp.Body)
 		if err != nil {
-			fb.Println(err)
+			drawErrorBox(err, fb, t, &fbinkOpts)
 			logger.Fatal(err)
 		}
 		fb.Println(string(body))