From 5630a4da32e81575daafda24d6787acccc5cc125 Mon Sep 17 00:00:00 2001
From: Zed <zedeus@pm.me>
Date: Wed, 23 Oct 2019 11:48:08 +0200
Subject: [PATCH] Add theme option

---
 src/prefs_impl.nim         |  7 ++++++-
 src/routes/preferences.nim |  8 ++++++--
 src/views/general.nim      |  2 ++
 src/views/preferences.nim  | 10 +++++++---
 4 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/src/prefs_impl.nim b/src/prefs_impl.nim
index 96f8479..4978b70 100644
--- a/src/prefs_impl.nim
+++ b/src/prefs_impl.nim
@@ -51,6 +51,9 @@ const prefList*: OrderedTable[string, seq[Pref]] = {
   ],
 
   "Display": @[
+    Pref(kind: select, name: "theme", label: "Theme",
+         defaultOption: "Dark"),
+
     Pref(kind: checkbox, name: "hideTweetStats",
          label: "Hide tweet stats (replies, retweets, likes)",
          defaultState: false),
@@ -94,10 +97,12 @@ macro genUpdatePrefs*(): untyped =
     of input:
       result.add quote do: prefs.`ident` = xmltree.escape(strip(`value`))
     of select:
+      let name = pref.name
       let options = pref.options
       let default = pref.defaultOption
       result.add quote do:
-        if `value` in `options`: prefs.`ident` = `value`
+        if `name` == "theme": prefs.`ident` = `value`
+        elif `value` in `options`: prefs.`ident` = `value`
         else: prefs.`ident` = `default`
 
   result.add quote do:
diff --git a/src/routes/preferences.nim b/src/routes/preferences.nim
index 47bd5c3..6bba29d 100644
--- a/src/routes/preferences.nim
+++ b/src/routes/preferences.nim
@@ -1,4 +1,4 @@
-import strutils, uri
+import strutils, uri, os
 
 import jester
 
@@ -8,13 +8,17 @@ import ../views/[general, preferences]
 
 export preferences
 
+proc findThemes*(dir: string): seq[string] =
+  for kind, path in walkDir(dir / "css" / "themes"):
+    result.add path.splitFile.name.capitalizeAscii
+
 proc createPrefRouter*(cfg: Config) =
   router preferences:
     template savePrefs(): untyped =
       setCookie("preferences", $prefs.id, daysForward(360), httpOnly=true, secure=cfg.useHttps)
 
     get "/settings":
-      let html = renderPreferences(cookiePrefs(), refPath())
+      let html = renderPreferences(cookiePrefs(), refPath(), findThemes(cfg.staticDir))
       resp renderMain(html, request, cfg, "Preferences")
 
     get "/settings/@i?":
diff --git a/src/views/general.nim b/src/views/general.nim
index af650e7..e0433aa 100644
--- a/src/views/general.nim
+++ b/src/views/general.nim
@@ -30,10 +30,12 @@ proc renderNavbar*(title, rss: string; req: Request): VNode =
 proc renderMain*(body: VNode; req: Request; cfg: Config; titleText=""; desc="";
                  rss=""; `type`="article"; video=""; images: seq[string] = @[]): string =
   let prefs = getPrefs(req.cookies.getOrDefault("preferences"), cfg.hostname)
+  let theme = "/css/themes/" & toLowerAscii(prefs.theme) & ".css"
   let node = buildHtml(html(lang="en")):
     head:
       link(rel="stylesheet", `type`="text/css", href="/css/style.css")
       link(rel="stylesheet", `type`="text/css", href="/css/fontello.css")
+      link(rel="stylesheet", `type`="text/css", href=theme)
 
       link(rel="apple-touch-icon", sizes="180x180", href="/apple-touch-icon.png")
       link(rel="icon", type="image/png", sizes="32x32", href="/favicon-32x32.png")
diff --git a/src/views/preferences.nim b/src/views/preferences.nim
index c503cbc..7a415f6 100644
--- a/src/views/preferences.nim
+++ b/src/views/preferences.nim
@@ -1,4 +1,4 @@
-import tables, macros, strutils
+import tables, macros, strutils, os
 import karax/[karaxdsl, vdom, vstyles]
 
 import renderutils
@@ -22,12 +22,16 @@ macro renderPrefs*(): untyped =
 
       case pref.kind
       of checkbox: discard
-      of select: stmt[0].add newLit(pref.options)
       of input: stmt[0].add newLit(pref.placeholder)
+      of select:
+        if pref.name == "theme":
+          stmt[0].add ident("themes")
+        else:
+          stmt[0].add newLit(pref.options)
 
       result[2].add stmt
 
-proc renderPreferences*(prefs: Prefs; path: string): VNode =
+proc renderPreferences*(prefs: Prefs; path: string; themes: seq[string]): VNode =
   buildHtml(tdiv(class="overlay-panel")):
     fieldset(class="preferences"):
       form(`method`="post", action="/saveprefs"):