feat: integrate MCP server and screen override into system firmware

- Add McpSettings (load/save mcpEnabled, mcpOverrideEnabled to /data/service/mcp/settings.properties) - Add McpSystem: global state, canvas drawing (RGB565, BMP, PBM, text), I2S audio (WAV, MP3 via minimp3, tone, record) - Add McpHandler: unauthenticated POST /api/mcp (JSON-RPC 2.0, 13 tools) and POST /api/screen/raw endpoints - Route MCP endpoints before Basic Auth check in WebServerService::handleApiPost - Start HTTP server at boot if either webServerEnabled OR mcpEnabled is set - Fix setEnabled: start unconditionally when called with true; only stop if both WS and MCP are disabled - Add McpSettingsApp (Settings category): toggle MCP service + screen override, show live endpoint URL - Add McpOverrideApp (appId one.tactility.mcpscreen): full-screen LVGL canvas for LLM-driven display override - Register both new apps in Tactility.cpp
2026-06-26 23:02:09 -04:00
parent 28ff01561a
commit 41004a3c6f
11 changed files with 4215 additions and 5 deletions
@@ -0,0 +1,67 @@
+#include <Tactility/settings/McpSettings.h>
+#include <Tactility/file/PropertiesFile.h>
+#include <Tactility/file/File.h>
+#include <Tactility/Logger.h>
+#include <map>
+#include <string>
+
+namespace tt::settings::mcp {
+
+static const auto LOGGER = Logger("McpSettings");
+constexpr auto* SETTINGS_FILE = "/data/service/mcp/settings.properties";
+
+constexpr auto* KEY_MCP_ENABLED = "mcpEnabled";
+constexpr auto* KEY_MCP_OVERRIDE_ENABLED = "mcpOverrideEnabled";
+
+bool load(McpSettings& settings) {
+    std::map<std::string, std::string> map;
+    if (!file::loadPropertiesFile(SETTINGS_FILE, map)) {
+        return false;
+    }
+
+    auto mcp_enabled = map.find(KEY_MCP_ENABLED);
+    auto mcp_override = map.find(KEY_MCP_OVERRIDE_ENABLED);
+
+    settings.mcpEnabled = (mcp_enabled != map.end())
+        ? (mcp_enabled->second == "1" || mcp_enabled->second == "true")
+        : false;
+
+    settings.mcpOverrideEnabled = (mcp_override != map.end())
+        ? (mcp_override->second == "1" || mcp_override->second == "true")
+        : true; // Default true
+
+    return true;
+}
+
+McpSettings getDefault() {
+    return McpSettings{
+        .mcpEnabled = false,
+        .mcpOverrideEnabled = true
+    };
+}
+
+McpSettings loadOrGetDefault() {
+    McpSettings settings;
+    if (!load(settings)) {
+        settings = getDefault();
+        file::findOrCreateDirectory("/data/service/mcp", 0755);
+        save(settings);
+    }
+    return settings;
+}
+
+bool save(const McpSettings& settings) {
+    file::findOrCreateDirectory("/data/service/mcp", 0755);
+
+    std::map<std::string, std::string> map;
+    map[KEY_MCP_ENABLED] = settings.mcpEnabled ? "true" : "false";
+    map[KEY_MCP_OVERRIDE_ENABLED] = settings.mcpOverrideEnabled ? "true" : "false";
+
+    if (!file::savePropertiesFile(SETTINGS_FILE, map)) {
+        LOGGER.error("Failed to save MCP settings to {}", SETTINGS_FILE);
+        return false;
+    }
+    return true;
+}
+
+} // namespace