From 8171d5af896a112c18780c0404ec7609916ecea6 Mon Sep 17 00:00:00 2001
From: Ted Unangst <tedu@tedunangst.com>
Date: Mon, 11 May 2020 16:24:18 -0400
Subject: [PATCH] custom flags

---
 activity.go | 16 +++++++++++--
 bloat.go    | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 fun.go      |  1 +
 web.go      |  2 ++
 4 files changed, 82 insertions(+), 2 deletions(-)

diff --git a/activity.go b/activity.go
index 3953842..4992abd 100644
--- a/activity.go
+++ b/activity.go
@@ -1035,8 +1035,6 @@ func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
 		}
 		translate(h)
 		redoimages(h)
-		jo["summary"] = html.EscapeString(h.Precis)
-		jo["content"] = h.Noise
 		if h.Precis != "" {
 			jo["sensitive"] = true
 		}
@@ -1081,6 +1079,18 @@ func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
 			t["icon"] = i
 			tags = append(tags, t)
 		}
+		for _, e := range bloat_fixupflags(h) {
+			t := junk.New()
+			t["id"] = e.ID
+			t["type"] = "Emoji"
+			t["name"] = e.Name
+			i := junk.New()
+			i["type"] = "Image"
+			i["mediaType"] = "image/png"
+			i["url"] = e.ID
+			t["icon"] = i
+			tags = append(tags, t)
+		}
 		if len(tags) > 0 {
 			jo["tag"] = tags
 		}
@@ -1123,6 +1133,8 @@ func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
 		if len(atts) > 0 {
 			jo["attachment"] = atts
 		}
+		jo["summary"] = html.EscapeString(h.Precis)
+		jo["content"] = h.Noise
 		j["object"] = jo
 	case "bonk":
 		j["type"] = "Announce"
diff --git a/bloat.go b/bloat.go
index e89675f..e927a27 100644
--- a/bloat.go
+++ b/bloat.go
@@ -14,3 +14,68 @@
 // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 package main
+
+import (
+	"fmt"
+	"regexp"
+	"image"
+	"image/png"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+func bloat_showflag(writer http.ResponseWriter, req *http.Request) {
+	code := mux.Vars(req)["code"]
+	colors := strings.Split(code, ",")
+	numcolors := len(colors)
+	h := (128 / numcolors) * numcolors
+	w := h * 3 / 2
+	img := image.NewRGBA(image.Rect(0, 0, w, h))
+	for i := 0; i < h; i++ {
+		hex := colors[i*numcolors/h]
+		if len(hex) == 3 {
+			hex = fmt.Sprintf("%c%c%c%c%c%c",
+				hex[0], hex[0], hex[1], hex[1], hex[2], hex[2])
+		}
+		c, _ := strconv.ParseUint(hex, 16, 32)
+		r := byte(c >> 16 & 0xff)
+		g := byte(c >> 8 & 0xff)
+		b := byte(c >> 0 & 0xff)
+		for j := 0; j < w; j++ {
+			p := i*img.Stride + j*4
+			img.Pix[p+0] = r
+			img.Pix[p+1] = g
+			img.Pix[p+2] = b
+			img.Pix[p+3] = 255
+		}
+	}
+	png.Encode(writer, img)
+}
+
+var re_flags = regexp.MustCompile("flag:[[:alnum:],]+")
+
+func bloat_fixupflags(h *Honk) []Emu {
+	var emus []Emu
+	count := 0
+	h.Noise = re_flags.ReplaceAllStringFunc(h.Noise, func(m string) string {
+		count++
+		var e Emu
+		e.Name = fmt.Sprintf(":flag%d:", count)
+		e.ID = fmt.Sprintf("https://%s/flag/%s", serverName, m[5:])
+		emus = append(emus, e)
+		return e.Name
+	})
+	return emus
+}
+
+func bloat_renderflags(h *Honk) {
+	h.Noise = re_flags.ReplaceAllStringFunc(h.Noise, func(m string) string {
+		code := m[5:]
+		src := fmt.Sprintf("https://%s/flag/%s", serverName, code)
+		return fmt.Sprintf(`<img class="emu" title="%s" src="%s">`, "flag", src)
+	})
+}
+
diff --git a/fun.go b/fun.go
index 2ec4d99..40ba38e 100644
--- a/fun.go
+++ b/fun.go
@@ -139,6 +139,7 @@ func reverbolate(userid int64, honks []*Honk) {
 			}
 			return e
 		}
+		bloat_renderflags(h)
 		h.Precis = re_emus.ReplaceAllStringFunc(h.Precis, emuxifier)
 		h.Noise = re_emus.ReplaceAllStringFunc(h.Noise, emuxifier)
 
diff --git a/web.go b/web.go
index c5ad083..84def27 100644
--- a/web.go
+++ b/web.go
@@ -2418,6 +2418,8 @@ func serve() {
 	getters.HandleFunc("/meme/{meme:[^.]*[^/]+}", servememe)
 	getters.HandleFunc("/.well-known/webfinger", fingerlicker)
 
+	getters.HandleFunc("/flag/{code:.+}", bloat_showflag)
+
 	getters.HandleFunc("/server", serveractor)
 	posters.HandleFunc("/server/inbox", serverinbox)
 	posters.HandleFunc("/inbox", serverinbox)