#ifndef GENERATOR_HPP
#define GENERATOR_HPP

#include <deque>
#include <unordered_map>
#include <string>

void InitializeGenerator(void);
int GenerateRandomNumber(int generationLimit);

struct ArgumentList {
    std::string filename = "";
    bool isFileSet = false;
    int prefixLength = 0;
    bool isPrefixSet = false;
    int outputLength = 0;
    bool isOutputSet = false;
};

class TrieNode {
public:
    std::unordered_map<char, TrieNode*> children;
    int occurances = 1;
    bool isEndOfWord;

    TrieNode() : isEndOfWord(false) {}
};

class Trie {
public:
    Trie() : root(new TrieNode()) {}
    void insert(const std::deque<char>& currentKGram);
    bool search(const std::deque<char>& currentKGram) const;
private:
    TrieNode* root;
};


struct Generator {
public:
    Generator(void) = default;
    ~Generator(void) = default;
    void SetArguments(int argc, char* argv[]);
    void ReadFile(void);
    void GenerateOutput(void);
private:
    char GenerateCharacter(void);
    ArgumentList setup;
    Trie trie;
};

void PrintUsage(void);

#endif // !GENERATOR_HPP