main.cpp

#include <iostream>
#include <string>
#include <vector>
#include "LogParser.h"
#include "LogFilter.h"
#include "LogReport.h"
#include "Utils.h"

void printHelp(const std::string& programName) {
    std::cout << Utils::BOLD << "\nLogParser - C++ Log Analysis Tool v1.0.0\n" << Utils::RESET;
    Utils::printSeparator('-', 60);
    std::cout << "Usage:\n";
    std::cout << "  " << programName << " <logfile> [options]\n\n";
    std::cout << "Options:\n";
    std::cout << "  --level   <LEVEL>    Filter by level: DEBUG, INFO, WARNING, ERROR, CRITICAL\n";
    std::cout << "  --keyword <TEXT>     Filter by keyword in message\n";
    std::cout << "  --source  <SOURCE>   Filter by source/component\n";
    std::cout << "  --after   <TIME>     Show entries after timestamp (YYYY-MM-DD HH:MM:SS)\n";
    std::cout << "  --before  <TIME>     Show entries before timestamp\n";
    std::cout << "  --export  <FILE>     Export results to a file\n";
    std::cout << "  --summary            Show summary report only\n";
    std::cout << "  --no-color           Disable colorized output\n";
    std::cout << "  --help               Show this help message\n\n";
    std::cout << "Examples:\n";
    std::cout << "  " << programName << " app.log\n";
    std::cout << "  " << programName << " app.log --level ERROR\n";
    std::cout << "  " << programName << " app.log --keyword \"database\" --level ERROR\n";
    std::cout << "  " << programName << " app.log --summary\n";
    std::cout << "  " << programName << " app.log --level ERROR --export errors.log\n\n";
}

std::string getArg(const std::vector<std::string>& args,
                   const std::string& flag, const std::string& def = "") {
    for (size_t i = 0; i < args.size() - 1; i++) {
        if (args[i] == flag) return args[i + 1];
    }
    return def;
}

bool hasFlag(const std::vector<std::string>& args, const std::string& flag) {
    for (const auto& a : args) if (a == flag) return true;
    return false;
}

int main(int argc, char* argv[]) {
    std::vector<std::string> args(argv, argv + argc);

    if (argc < 2 || hasFlag(args, "--help")) {
        printHelp(args[0]);
        return 0;
    }

    std::string filepath = args[1];
    bool showSummary     = hasFlag(args, "--summary");
    bool noColor         = hasFlag(args, "--no-color");
    std::string exportFile = getArg(args, "--export");

    FilterOptions opts;
    opts.level    = getArg(args, "--level");
    opts.keyword  = getArg(args, "--keyword");
    opts.source   = getArg(args, "--source");
    opts.afterTime  = getArg(args, "--after");
    opts.beforeTime = getArg(args, "--before");

    // ── Parse ─────────────────────────────────────────────────
    std::cout << Utils::CYAN << "Parsing: " << filepath << Utils::RESET << "\n";
    LogParser parser;
    auto entries = parser.parseFile(filepath);

    if (entries.empty()) {
        std::cerr << Utils::RED << "No valid log entries found.\n" << Utils::RESET;
        return 1;
    }

    std::cout << Utils::DIM << "Parsed " << entries.size()
              << " entries (" << parser.getSkippedLines() << " lines skipped)\n"
              << Utils::RESET;

    // ── Filter ────────────────────────────────────────────────
    auto filtered = LogFilter::apply(entries, opts);

    if (!opts.level.empty() || !opts.keyword.empty() ||
        !opts.source.empty() || !opts.afterTime.empty() || !opts.beforeTime.empty()) {
        std::cout << Utils::DIM << "Filtered to " << filtered.size() << " entries\n" << Utils::RESET;
    }

    Utils::printSeparator();

    // ── Output ────────────────────────────────────────────────
    if (showSummary) {
        LogReport::printSummary(filtered);
    } else {
        LogReport::printEntries(filtered, !noColor);
        std::cout << "\n";
        LogReport::printSummary(filtered);
    }

    // ── Export ────────────────────────────────────────────────
    if (!exportFile.empty()) {
        LogReport::exportToFile(filtered, exportFile);
    }

    return 0;
}