// SPDX-FileCopyrightText: © 2026 Jeffrey C. Ollie
// SPDX-License-Identifier: MIT

const WayIterator = @This();

const std = @import("std");

const OSMPBF = @import("proto/OSMPBF.pb.zig");

const Way = @import("Way.zig");

block: *const OSMPBF.PrimitiveBlock,
group: *const OSMPBF.PrimitiveGroup,
index: usize,

pub fn init(block: *const OSMPBF.PrimitiveBlock, group: *const OSMPBF.PrimitiveGroup) WayIterator {
    return .{
        .block = block,
        .group = group,
        .index = 0,
    };
}

pub fn next(self: *WayIterator, gpa: std.mem.Allocator) !?Way {
    if (self.index >= self.group.ways.items.len) return null;

    const way = &self.group.ways.items[self.index];
    self.index += 1;

    return try .init(gpa, self.block, way);
}