#include "lang.h"

int read_file(std::deque<std::string> args) {
    if (args.empty()) {
        std::cout << bg_red(bold("ERROR")) << ": No file input" << std::endl;
        return 1;
    }
    fs::path filename = args[0];
    args.pop_front();
    std::ifstream file(filename);
    if (!file) {
        std::cout << bg_red(bold("ERROR")) << ": Could not find file"
                  << std::endl;
        return 1;
    }
    std::string line;
    while (std::getline(file, line)) {
        std::cout << line << std::endl;
    }
    return 0;
}

int parse_line(std::string line) {
    struct parsed_token parsed {
        empty_token, empty_token
    };
    if (int sub = line.find("//"))
        line = line.substr(sub);
    std::deque<std::string> tokens;
    int start = 0;
    size_t end = line.find(" ");
    while (end != std::string::npos) {
        tokens.push_back(line.substr(start, end - start));
        start = end + 1;
        end = line.find(" ", start);
    }
    for (std::string& token : tokens) {
        try {
            Token curr_token = CV_Tokens.at(token);
            parsed.lastToken = parsed.currentToken;
            if (curr_token == parsed.lastToken &&
                curr_token.type == TokenType::SPACE)
                continue;
            else {
                // TODO: Line number handling for better errors
                std::cerr << "Invalid token `" << token << "'." << std::endl;
                return 1;
            }
            parsed.currentToken = curr_token;
        } catch (std::out_of_range& oor) {
            // this is most likely a variable or a string
            if (parsed.lastToken.type == TokenType::INTRINSIC &&
                parsed.lastToken.intrinsic == Intrinsic::LET) {
                VariableToken var{TokenType::VARIABLE, Intrinsic::EMPTY,
                                  Constant::EMPTY, "", token};
                parsed.currentToken = var;
                var_tokens.push_back(var);
            }
            // string parsing
            std::cerr << "Not implemented. Found `" << token << "'."
                      << std::endl;
            continue;
        }
    }
    return 0;
}