3 files changed, 160 insertions, 0 deletions
diff --git a/src/modules/wm/option.h b/src/modules/wm/option.h
new file mode 100644
index 0000000..7d343c9
--- /dev/null
+++ b/src/modules/wm/option.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "common/option.h"
+
+typedef struct FFWMOptions {
+    FFModuleArgs moduleArgs;
+
+    bool detectPlugin;
+} FFWMOptions;
+
+static_assert(sizeof(FFWMOptions) <= FF_OPTION_MAX_SIZE, "FFWMOptions size exceeds maximum allowed size");
diff --git a/src/modules/wm/wm.c b/src/modules/wm/wm.c
new file mode 100644
index 0000000..5ec6646
--- /dev/null
+++ b/src/modules/wm/wm.c
@@ -0,0 +1,138 @@
+#include "common/printing.h"
+#include "common/jsonconfig.h"
+#include "common/strutil.h"
+#include "detection/displayserver/displayserver.h"
+#include "detection/wm/wm.h"
+#include "modules/wm/wm.h"
+
+bool ffPrintWM(FFWMOptions* options) {
+    const FFDisplayServerResult* result = ffConnectDisplayServer();
+
+    if (result->wmPrettyName.length == 0) {
+        ffPrintError(FF_WM_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "No WM found");
+        return false;
+    }
+
+    FF_STRBUF_AUTO_DESTROY pluginName = ffStrbufCreate();
+    if (options->detectPlugin) {
+        ffDetectWMPlugin(&pluginName);
+    }
+
+    FF_STRBUF_AUTO_DESTROY version = ffStrbufCreate();
+    if (instance.config.general.detectVersion) {
+        ffDetectWMVersion(&result->wmProcessName, &version, options);
+    }
+
+    if (options->moduleArgs.outputFormat.length == 0) {
+        ffPrintLogoAndKey(FF_WM_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
+
+        ffStrbufWriteTo(&result->wmPrettyName, stdout);
+
+        if (version.length > 0) {
+            putchar(' ');
+            ffStrbufWriteTo(&version, stdout);
+        }
+
+        if (result->wmProtocolName.length > 0) {
+            fputs(" (", stdout);
+            ffStrbufWriteTo(&result->wmProtocolName, stdout);
+            putchar(')');
+        }
+
+        if (pluginName.length > 0) {
+            fputs(" (with ", stdout);
+            ffStrbufWriteTo(&pluginName, stdout);
+            putchar(')');
+        }
+
+        putchar('\n');
+    } else {
+        FF_PRINT_FORMAT_CHECKED(FF_WM_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, ((FFformatarg[]) {
+                                                                                                       FF_ARG(result->wmProcessName, "process-name"),
+                                                                                                       FF_ARG(result->wmPrettyName, "pretty-name"),
+                                                                                                       FF_ARG(result->wmProtocolName, "protocol-name"),
+                                                                                                       FF_ARG(pluginName, "plugin-name"),
+                                                                                                       FF_ARG(version, "version"),
+                                                                                                   }));
+    }
+
+    return true;
+}
+
+void ffParseWMJsonObject(FFWMOptions* options, yyjson_val* module) {
+    yyjson_val *key, *val;
+    size_t idx, max;
+    yyjson_obj_foreach (module, idx, max, key, val) {
+        if (ffJsonConfigParseModuleArgs(key, val, &options->moduleArgs)) {
+            continue;
+        }
+
+        if (unsafe_yyjson_equals_str(key, "detectPlugin")) {
+            options->detectPlugin = yyjson_get_bool(val);
+            continue;
+        }
+
+        ffPrintError(FF_WM_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Unknown JSON key %s", unsafe_yyjson_get_str(key));
+    }
+}
+
+void ffGenerateWMJsonConfig(FFWMOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    ffJsonConfigGenerateModuleArgsConfig(doc, module, &options->moduleArgs);
+
+    yyjson_mut_obj_add_bool(doc, module, "detectPlugin", options->detectPlugin);
+}
+
+bool ffGenerateWMJsonResult(FF_A_UNUSED FFWMOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    const FFDisplayServerResult* result = ffConnectDisplayServer();
+
+    if (result->wmPrettyName.length == 0) {
+        yyjson_mut_obj_add_str(doc, module, "error", "No WM found");
+        return false;
+    }
+
+    FF_STRBUF_AUTO_DESTROY pluginName = ffStrbufCreate();
+    if (options->detectPlugin) {
+        ffDetectWMPlugin(&pluginName);
+    }
+
+    FF_STRBUF_AUTO_DESTROY version = ffStrbufCreate();
+    if (instance.config.general.detectVersion) {
+        ffDetectWMVersion(&result->wmProcessName, &version, options);
+    }
+
+    yyjson_mut_val* obj = yyjson_mut_obj_add_obj(doc, module, "result");
+    yyjson_mut_obj_add_strbuf(doc, obj, "processName", &result->wmProcessName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "prettyName", &result->wmPrettyName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "protocolName", &result->wmProtocolName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "pluginName", &pluginName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "version", &version);
+
+    return true;
+}
+
+void ffInitWMOptions(FFWMOptions* options) {
+    ffOptionInitModuleArg(&options->moduleArgs, "");
+    options->detectPlugin = true;
+}
+
+void ffDestroyWMOptions(FFWMOptions* options) {
+    ffOptionDestroyModuleArg(&options->moduleArgs);
+}
+
+FFModuleBaseInfo ffWMModuleInfo = {
+    .name = FF_WM_MODULE_NAME,
+    .description = "Print the window manager name and version",
+    .initOptions = (void*) ffInitWMOptions,
+    .destroyOptions = (void*) ffDestroyWMOptions,
+    .parseJsonObject = (void*) ffParseWMJsonObject,
+    .printModule = (void*) ffPrintWM,
+    .generateJsonResult = (void*) ffGenerateWMJsonResult,
+    .generateJsonConfig = (void*) ffGenerateWMJsonConfig,
+    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
+        { "WM process name", "process-name" },
+        { "WM pretty name", "pretty-name" },
+        { "WM protocol name", "protocol-name" },
+        { "WM plugin name", "plugin-name" },
+        { "WM version", "version" },
+    }))
+};
diff --git a/src/modules/wm/wm.h b/src/modules/wm/wm.h
new file mode 100644
index 0000000..4819d73
--- /dev/null
+++ b/src/modules/wm/wm.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "option.h"
+
+#define FF_WM_MODULE_NAME "WM"
+
+bool ffPrintWM(FFWMOptions* options);
+void ffInitWMOptions(FFWMOptions* options);
+void ffDestroyWMOptions(FFWMOptions* options);
+
+extern FFModuleBaseInfo ffWMModuleInfo;