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

const PrimitiveBlock = @This();

const std = @import("std");

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

const DenseNodeIterator = @import("DenseNodeIterator.zig");
const PrimitiveGroup = @import("PrimitiveGroup.zig");

block: OSMPBF.PrimitiveBlock,

pub fn init(block: OSMPBF.PrimitiveBlock) PrimitiveBlock {
    return .{
        .block = block,
    };
}

pub const PrimitiveBlockIterator = struct {
    block: *const OSMPBF.PrimitiveBlock,
    index: usize,

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

    pub fn next(self: *PrimitiveBlockIterator) ?PrimitiveGroup {
        if (self.index >= self.block.primitivegroup.items.len) return null;
        const group = &self.block.primitivegroup.items[self.index];
        self.index += 1;
        return .{
            .block = self.block,
            .group = group,
        };
    }
};

pub fn iterator(self: *const PrimitiveBlock) PrimitiveBlockIterator {
    return .{
        .block = &self.block,
        .index = 0,
    };
}