// SPDX-License-Identifier: MIT
#ifndef DBC_DIAGNOSTIC_H
#define DBC_DIAGNOSTIC_H

#include "dbc_database.h"
#include <cstddef>
#include <string>
#include <vector>

/** @brief Warning or fatal parse error. */
enum class DbcDiagnosticSeverity {
    Warning,
    Error
};

/** Stable categories; messages provide the details. */
enum class DbcDiagnosticCode {
    FileOpenError,
    FileReadError,
    InvalidStatement,
    InvalidValueDescription,
    InvalidMultiplexing,
    UnsupportedStatement,
    InvalidAttribute,
    UnsupportedAttribute
};

/** @brief Diagnostic message and physical source location. */
struct DbcDiagnostic {
    DbcDiagnosticSeverity severity; /**< Message severity. */
    DbcDiagnosticCode code;         /**< Stable diagnostic category. */
    std::string filePath;           /**< Input file path. */
    std::size_t lineNumber;         /**< One-based physical line; zero for file-level errors. */
    std::string message;            /**< Human-readable diagnostic details. */
};

/** @brief Parsed database and diagnostics; the database is empty on error. */
struct DbcParseResult {
    DbcDatabase database;                   /**< Parsed content, published only on success. */
    std::vector<DbcDiagnostic> diagnostics; /**< Warnings and the first error, if any. */

    /** @brief Return whether any diagnostic has error severity. */
    bool HasErrors() const {
        for (const DbcDiagnostic &diagnostic: diagnostics) {
            if (diagnostic.severity == DbcDiagnosticSeverity::Error)
                return true;
        }
        return false;
    }
};

#endif /* DBC_DIAGNOSTIC_H */