maplibre-rs/build.rs

use std::path::Path;
use std::{env, fs};

use mapr_utils::mbtiles::extract;
use wgsl_validate::validate_project_wgsl;

pub const MUNICH_X: u32 = 17421;
pub const MUNICH_Y: u32 = 11360;
pub const MUNICH_Z: u8 = 15;

/// Tiles which can be used by StaticTileFetcher
fn embed_tiles_statically() {
    let root_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
    let out_dir = env::var("OUT_DIR").unwrap();

    let out = Path::new(&out_dir).join("extracted-tiles");
    if out.exists() && out.is_dir() {
        fs::remove_dir_all(&out).unwrap()
    }
    fs::create_dir_all(&out).unwrap();

    let source = Path::new(&root_dir).join(format!("test-data/munich-{}.mbtiles", MUNICH_Z));

    if source.exists() {
        // Pack tiles around Munich HBF (100 tiles in each direction)
        extract(
            source,
            out,
            MUNICH_Z,
            (MUNICH_X - 100)..(MUNICH_X + 100),
            (MUNICH_Y - 100)..(MUNICH_Y + 100),
        )
        .unwrap();
    } else {
        // Do not statically embed tiles
    }
}

fn main() {
    validate_project_wgsl();
    embed_tiles_statically();
}