github/workflows: add lua linting

.github/workflows/lint.yml

@@ -27,3 +27,9 @@ jobs:
       - uses: actions/checkout@v4
 
       - uses: norio-nomura/action-swiftlint@3.2.1
+
+  lua-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: lunarmodules/luacheck@v1

.luacheckrc

@@ -0,0 +1,129 @@
+local mp_globals = {
+    mp = {
+        fields = {
+            command = {},
+            commandv = {},
+            command_native = {},
+            command_native_async = {},
+            abort_async_command = {},
+            del_property = {},
+            get_property = {},
+            get_property_osd = {},
+            get_property_bool = {},
+            get_property_number = {},
+            get_property_native = {},
+            set_property = {},
+            set_property_bool = {},
+            set_property_number = {},
+            set_property_native = {},
+            get_time = {},
+            add_key_binding = {},
+            add_forced_key_binding = {},
+            remove_key_binding = {},
+            register_event = {},
+            unregister_event = {},
+            observe_property = {},
+            unobserve_property = {},
+            add_timeout = {},
+            add_periodic_timer = {},
+            get_opt = {},
+            get_script_name = {},
+            get_script_directory = {},
+            osd_message = {},
+            get_wakeup_pipe = {},
+            get_next_timeout = {},
+            dispatch_events = {},
+            register_idle = {},
+            unregister_idle = {},
+            enable_messages = {},
+            register_script_message = {},
+            unregister_script_message = {},
+            create_osd_overlay = {},
+            get_osd_size = {},
+            msg = {
+                fields = {
+                    fatal = {},
+                    error = {},
+                    warn = {},
+                    info = {},
+                    verbose = {},
+                    debug = {},
+                    trace = {},
+                }
+            },
+            -- Not documented
+            -- TODO: Document or remove them
+            add_hook = {},
+            disable_key_bindings = {},
+            enable_key_bindings = {},
+            find_config_file = {},
+            format_time = {},
+            get_mouse_pos = {},
+            set_key_bindings = {},
+            set_mouse_area = {},
+            set_osd_ass = {},
+        }
+    }
+}
+
+local mp_internal = {
+    mp = {
+        fields = {
+            -- Internal
+            -- TODO: Move to mp_internal module
+            ARRAY = { fields = { info = {}, type = {} }},
+            MAP = { fields = { info = {}, type = {} }},
+            UNKNOWN_TYPE = { fields = { info = {}, type = {} }},
+            _legacy_overlay = { fields = { res_x = {}, res_y = {}, data = {}, update = {} }},
+            cancel_timer = {},
+            flush_keybindings = {},
+            get_osd_margins = {},
+            input_define_section = {},
+            input_disable_section = {},
+            input_enable_section = {},
+            input_set_section_mouse_area = {},
+            keep_running = {},
+            log = {},
+            raw_abort_async_command = {},
+            raw_command_native_async = {},
+            raw_hook_add = {},
+            raw_hook_continue = {},
+            raw_observe_property = {},
+            raw_unobserve_property = {},
+            raw_wait_event = {},
+            request_event = {},
+            script_name = {},
+            use_suspend = {},
+            wait_event = {},
+        }
+    }
+}
+
+std = "min+mp"
+stds = { mp = { read_globals = mp_globals } }
+-- mp_internal seems to be merged with mp for other files too...
+files["player/lua/defaults.lua"] = { globals = mp_internal }
+files["player/lua/auto_profiles.lua"] = { globals = { "p", "get" } }
+max_line_length = 100
+
+-- TODO: Remove everything below this line
+local todo = {
+    "player/lua/console.lua",
+    "player/lua/osc.lua",
+    "player/lua/ytdl_hook.lua",
+    "TOOLS/lua/ao-null-reload.lua",
+    "TOOLS/lua/autocrop.lua",
+    "TOOLS/lua/autodeint.lua",
+    "TOOLS/lua/autoload.lua",
+    "TOOLS/lua/command-test.lua",
+    "TOOLS/lua/cycle-deinterlace-pullup.lua",
+    "TOOLS/lua/nan-test.lua",
+    "TOOLS/lua/observe-all.lua",
+    "TOOLS/lua/osd-test.lua",
+    "TOOLS/lua/status-line.lua",
+    "TOOLS/lua/test-hooks.lua",
+}
+for _, path in ipairs(todo) do
+    files[path]["allow_defined"] = true
+    files[path]["max_line_length"] = 120
+end