#include "filesys.h"

FSInfo fsinfo;

auto mount_fs() -> bool {
  if(!LittleFS.begin()) {
    Serial.println("[ERROR] LittleFS.info(), reset ...");
    return false;
  }

  if(!LittleFS.info(fsinfo)) {
    Serial.println("[ERROR] LittleFS.info(), reset ...");
    return false;
  }

  printf("Filesystem opened:\n\r");
  printf("\ttotalBytes:\t%d\n\r",     fsinfo.totalBytes);
  printf("\tusedBytes:\t%d\n\r",      fsinfo.usedBytes);
  printf("\tblockSize:\t%d\n\r",      fsinfo.blockSize);
  printf("\tpageSize:\t%d\n\r",       fsinfo.pageSize);
  printf("\tmaxOpenFiles:\t%d\n\r",   fsinfo.maxOpenFiles);
  printf("\tmaxPathLength:\t%d\n\r",  fsinfo.maxPathLength);
  printf("\n\r");

  return true;
}

auto format_fs() -> bool {
  printf("Formatting FS ! \n\r");
  return LittleFS.format();
}

void ls(const char * dirname) {
  Serial.printf("ls -l %s\n\r", dirname);
  Dir root = LittleFS.openDir(dirname);

  while (root.next()) {
    File file = root.openFile("r");

    time_t lw = file.getLastWrite();
    struct tm * tmstruct = localtime(&lw);
    Serial.printf("%8d  %02d %02d %02d:%02d  %s\n\r",
        file.size(), 
        tmstruct->tm_mon + 1, 
        tmstruct->tm_mday,
        tmstruct->tm_hour,
        tmstruct->tm_min,
        root.fileName().c_str());
    file.close();
  }
  Serial.println();
}

File open(const char * path) {
  return LittleFS.open(path, "r");
}


void printFile(const char * path) {
  Serial.printf("Reading file: %s\n\r", path);

  File file = LittleFS.open(path, "r");
  if (!file) {
    Serial.println("Failed to open file for reading");
    return;
  }

  Serial.print("Read from file: ");
  while (file.available()) {
    Serial.write(file.read());
  }
  file.close();
}

void writeFile(const char * path, const char * message) {
  Serial.printf("Writing file: %s\n\r", path);

  File file = LittleFS.open(path, "w");
  if (!file) {
    Serial.println("Failed to open file for writing");
    return;
  }
  if (file.print(message)) {
    Serial.println("File written");
  } else {
    Serial.println("Write failed");
  }
  delay(2000); // Make sure the CREATE and LASTWRITE times are different
  file.close();
}

void appendFile(const char * path, const char * message) {
  Serial.printf("Appending to file: %s\n\r", path);

  File file = LittleFS.open(path, "a");
  if (!file) {
    Serial.println("Failed to open file for appending");
    return;
  }
  if(file.print(message)) {
    Serial.println("Message appended");
  } else {
    Serial.println("Append failed");
  }
  file.close();
}

void renameFile(const char * path1, const char * path2) {
  Serial.printf("Renaming file %s to %s\n\r", path1, path2);
  if (LittleFS.rename(path1, path2)) {
    Serial.println("File renamed");
  } else {
    Serial.println("Rename failed");
  }
}

void deleteFile(const char * path) {
  Serial.printf("Deleting file: %s\n\r", path);
  if (LittleFS.remove(path)) {
    Serial.println("File deleted");
  } else {
    Serial.println("Delete failed");
  }
}