const c = @import("./c.zig");

pub const FlecsError = error{
    InvalidOperation,
    InvalidParameter,
    ConstraintViolated,
    OutOfMemory,
    OutOfRange,
    Unsupported,
    InternalError,
    AlreadyDefined,
    MissingOsApi,
    OperationFailed,
    InvalidConversion,
    IdInUse,
    CycleDetected,
    LeakDetected,
    DoubleFree,

    InconsistentName,
    NameInUse,
    NotAComponent,
    InvalidComponentSize,
    InvalidComponentAlignment,
    ComponentNotRegistered,
    InconsistentComponentId,
    InconsistentComponentAction,
    ModuleUndefined,
    MissingSymbol,
    AlreadyInUse,

    AccessViolation,
    ColumnIndexOutOfRange,
    ColumnIsNotShared,
    ColumnIsShared,
    ColumnTypeMismatch,

    InvalidWhileReadonly,
    LockedStorage,
    InvalidFromWorker,

    /// An unexpected error occurred in Flecs,
    /// but we're not exactly sure what happened.
    Unknown,
};

/// Gets the last logged error that occurred in Flecs.
/// Calling this function resets the error code.
pub fn getLastError() ?FlecsError {
    return intToFlecsError(c.ecs_log_last_error());
}

/// Gets the last logged error that occurred in Flecs.
/// Calling this function resets the error code.
pub fn getLastErrorOrUnknown() FlecsError {
    return getLastError() orelse FlecsError.Unknown;
}

pub fn intToFlecsError(i: i32) ?FlecsError {
    return switch (i) {
        c.ECS_INVALID_OPERATION => FlecsError.InvalidOperation,
        c.ECS_INVALID_PARAMETER => FlecsError.InvalidParameter,
        c.ECS_CONSTRAINT_VIOLATED => FlecsError.ConstraintViolated,
        c.ECS_OUT_OF_MEMORY => FlecsError.OutOfMemory,
        c.ECS_OUT_OF_RANGE => FlecsError.OutOfRange,
        c.ECS_UNSUPPORTED => FlecsError.Unsupported,
        c.ECS_INTERNAL_ERROR => FlecsError.InternalError,
        c.ECS_ALREADY_DEFINED => FlecsError.AlreadyDefined,
        c.ECS_MISSING_OS_API => FlecsError.MissingOsApi,
        c.ECS_OPERATION_FAILED => FlecsError.OperationFailed,
        c.ECS_INVALID_CONVERSION => FlecsError.InvalidConversion,
        c.ECS_ID_IN_USE => FlecsError.IdInUse,
        c.ECS_CYCLE_DETECTED => FlecsError.CycleDetected,
        c.ECS_LEAK_DETECTED => FlecsError.LeakDetected,
        c.ECS_DOUBLE_FREE => FlecsError.DoubleFree,

        c.ECS_INCONSISTENT_NAME => FlecsError.InconsistentName,
        c.ECS_NAME_IN_USE => FlecsError.NameInUse,
        c.ECS_NOT_A_COMPONENT => FlecsError.NotAComponent,
        c.ECS_INVALID_COMPONENT_SIZE => FlecsError.InvalidComponentSize,
        c.ECS_INVALID_COMPONENT_ALIGNMENT => FlecsError.InvalidComponentAlignment,
        c.ECS_COMPONENT_NOT_REGISTERED => FlecsError.ComponentNotRegistered,
        c.ECS_INCONSISTENT_COMPONENT_ID => FlecsError.InconsistentComponentId,
        c.ECS_INCONSISTENT_COMPONENT_ACTION => FlecsError.InconsistentComponentAction,
        c.ECS_MODULE_UNDEFINED => FlecsError.ModuleUndefined,
        c.ECS_MISSING_SYMBOL => FlecsError.MissingSymbol,
        c.ECS_ALREADY_IN_USE => FlecsError.AlreadyInUse,

        c.ECS_ACCESS_VIOLATION => FlecsError.AccessViolation,
        c.ECS_COLUMN_INDEX_OUT_OF_RANGE => FlecsError.ColumnIndexOutOfRange,
        c.ECS_COLUMN_IS_NOT_SHARED => FlecsError.ColumnIsNotShared,
        c.ECS_COLUMN_IS_SHARED => FlecsError.ColumnIsShared,
        c.ECS_COLUMN_TYPE_MISMATCH => FlecsError.ColumnTypeMismatch,

        c.ECS_INVALID_WHILE_READONLY => FlecsError.InvalidWhileReadonly,
        c.ECS_LOCKED_STORAGE => FlecsError.LockedStorage,
        c.ECS_INVALID_FROM_WORKER => FlecsError.InvalidFromWorker,

        else => null,
    };
}