////////////////////////////////
//~ Path helpers

String F_GetFull(Arena *arena, String path)
{
    return OS_GetFullPath(arena, path);
}

String F_GetFullCrossPlatform(Arena *arena, String path)
{
    String result = OS_GetFullPath(arena, path);
    for (u64 i = 0; i < result.len; ++i)
    {
        if (result.text[i] == '\\')
        {
            result.text[i] = '/';
        }
    }
    return result;
}

String F_GetFileName(String path)
{
    String result = path;
    u64 start = path.len;
    for (u64 i = path.len; i-- > 0;)
    {
        if (path.text[i] == '\\' || path.text[i] == '/')
        {
            start = i + 1;
            break;
        }
    }
    if (start < path.len)
    {
        result.text = &path.text[start];
        result.len = path.len - start;

    }
    return result;
}

String F_GetParentDir(String path)
{
    String result = ZI;
    result.text = path.text;
    u64 end = path.len;
    for (u64 i = path.len; i-- > 0;)
    {
        if (path.text[i] == '\\' || path.text[i] == '/')
        {
            end = i + 1;
            break;
        }
    }
    if (end < path.len)
    {
        result.len = end;
    }
    return result;
}

String F_ExtensionFromFile(String path)
{
    String result = ZI;
    u64 start = path.len;
    for (u64 i = path.len; i-- > 0;)
    {
        if (path.text[i] == '.')
        {
            start = i + 1;
            break;
        }
    }
    if (start < path.len)
    {
        result.text = &path.text[start];
        result.len = path.len - start;

    }
    return result;
}

////////////////////////////////
//~ File read operations

String F_DataFromFile(Arena *arena, String path)
{
    String result = ZI;
    OS_File file = OS_OpenFile(path, OS_FileFlag_Read);
    result = OS_ReadEntireFile(arena, file);
    OS_CloseFile(file);
    return result;
}

////////////////////////////////
//~ File write operations

void F_ClearWrite(String path, String data)
{
    OS_File file = OS_OpenFile(path, OS_FileFlag_Write | OS_FileFlag_Create);
    OS_ClearWriteFile(file, data);
    OS_CloseFile(file);
}

////////////////////////////////
//~ File attribute helpers

b32 F_IsFile(String path)
{
    return OS_FileExists(path);
}

b32 F_IsDir(String path)
{
    return OS_DirExists(path);
}

////////////////////////////////
//~ File iter operations

void F_FilesFromDir(Arena *arena, StringList *list, String dir, F_IterFlag flags)
{
    TempArena scratch = BeginScratch(arena);
    StringList tmp = ZI;
    String dir_full_path = F_GetFull(scratch.arena, dir);
    OS_DirContentsFromFullPath(scratch.arena, &tmp, dir_full_path);
    for (StringListNode *n = tmp.first; n; n = n->next)
    {
        String file_joined_path = StringF(arena, "%F/%F", FmtString(dir), FmtString(n->s));
        PushStringToList(arena, list, file_joined_path);
        if (flags & F_IterFlag_Recurse && F_IsDir(file_joined_path))
        {
            F_FilesFromDir(arena, list, file_joined_path, flags);
        }
    }
    EndScratch(scratch);
}