ConfigManager Class Reference

#include <ConfigManager.h>

Static Public Member Functions
static bool	loadConfig (String &ssid, String &pass, String &serverBase)
static bool	saveConfig (const String &ssid, const String &pass, const String &serverBase)
static String	readConfigJson ()
static void	listFiles ()

Static Private Attributes
static const char *	CONFIG_FILE = "/config.json"

Detailed Description

Definition at line 5 of file ConfigManager.h.

Member Function Documentation

listFiles()

void ConfigManager::listFiles ( )

static

Definition at line 93 of file ConfigManager.cpp.

                              {
    File root = LittleFS.open("/");
    if (!root) {
        Serial.println("LittleFS root open failed");
        return;
    }
    
    Serial.println("LittleFS contents:");
    File f = root.openNextFile();
    
    if (!f) {
        Serial.println("  (empty)");
    }
    
    while (f) {
        Serial.printf("  %s (%u bytes)\n", f.name(), static_cast<unsigned>(f.size()));
        f = root.openNextFile();
    }
}

loadConfig()

bool ConfigManager::loadConfig ( String & ssid, String & pass, String & serverBase )

static

Definition at line 18 of file ConfigManager.cpp.

                                                                             {
    String json = readConfigJson();
    if (json.length() == 0) return false;
    
    JsonDocument doc;
    DeserializationError err = deserializeJson(doc, json);
    if (err) {
        Serial.printf("Config parse error: %s\n", err.c_str());
        return false;
    }
    
    ssid = String(doc["ssid"] | ssid.c_str());
    pass = String(doc["password"] | pass.c_str());
    serverBase = String(doc["server_base"] | serverBase.c_str());
    
    return true;
}

References readConfigJson().

Referenced by setup().

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readConfigJson()

String ConfigManager::readConfigJson ( )

static

Definition at line 69 of file ConfigManager.cpp.

                                     {
    File f = LittleFS.open(CONFIG_FILE, "r");
    if (!f) {
        Serial.println("Config file not found");
        return {};//string
    }
 
    const size_t size = f.size();
    String contents;
    contents.reserve(size + 1);
    
    while (f.available()) {
        contents += static_cast<char>(f.read());
    }
    
    f.close();
    return contents;
}

References CONFIG_FILE.

Referenced by loadConfig().

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saveConfig()

bool ConfigManager::saveConfig ( const String & ssid, const String & pass, const String & serverBase )

static

Definition at line 42 of file ConfigManager.cpp.

                                                                                               {
    JsonDocument doc;
    doc["ssid"] = ssid;
    doc["password"] = pass;
    doc["server_base"] = serverBase;
    
    File f = LittleFS.open(CONFIG_FILE, "w");
    if (!f) {
        Serial.println("Failed to open config file for writing");
        return false;
    }
    
    if (serializeJson(doc, f) == 0) {
        f.close();
        Serial.println("Failed to write config JSON");
        return false;
    }
    
    f.close();
    return true;
}

References CONFIG_FILE.

Member Data Documentation

CONFIG_FILE

const char * ConfigManager::CONFIG_FILE = "/config.json"

staticprivate

Definition at line 20 of file ConfigManager.h.

Referenced by readConfigJson(), and saveConfig().

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The documentation for this class was generated from the following files:

• ConfigManager.h
• ConfigManager.cpp