[mpv] steal mugen script from amoethyst

.config/mpv/mpv.conf

@@ -2,6 +2,7 @@ profile=gpu-hq
 #gpu-api=vulkan
 gpu-context=wayland
 hwdec=none
+fullscreen=yes
 
 #ao=jack
 #audio-channels=stereo

.config/mpv/scripts/mugen.lua

@@ -0,0 +1,34 @@
+local utils = require("mp.utils")
+
+local function get_kdata(kid)
+    local resp = mp.command_native({
+        name = "subprocess",
+        args = { "curl", "-s", "https://kara.moe/api/karas/" .. kid },
+        capture_stdout = true,
+    })
+
+    return utils.parse_json(resp.stdout)
+end
+
+local function get_title(kdata)
+    return kdata.titles[kdata.titles_default_language]
+end
+
+local function on_load()
+    local path = mp.get_property("path")
+    local kid = path:match("^https://kara.moe/kara/.-([0-9a-z-]+)$")
+    if kid == nil then
+        kid = path:match("^https://live.karaokes.moe/%?video=([0-9a-z-]+)$")
+    end
+    if kid ~= nil then
+        local kdata = get_kdata(kid)
+        local mediafile = "https://kara.moe/downloads/medias/" .. kdata.mediafile
+        local subfile = "https://kara.moe/downloads/lyrics/" .. kdata.subfile
+        mp.set_property("stream-open-filename", mediafile)
+        mp.set_property("replaygain-fallback", kdata.gain)
+        mp.set_property("title", get_title(kdata))
+        mp.commandv("sub-add", subfile)
+    end
+end
+
+mp.register_event("start-file", on_load)