const std = @import("std");
const mem = std.mem;

const MANIFEST_MAGIC: u32 = 0x52474448;
const API_VERSION: u32 = 0x00480001; // API_VERSION 72.1

const FlipperManifestBase = extern struct {
    manifest_magic: u32 align(1),
    manifest_version: u32 align(1),
    api_version: u32 align(1),
    hardware_target_id: u16 align(1),
};

const FlipperApplicationManifestV1 = extern struct {
    base: FlipperManifestBase,
    stack_size: u16 align(1),
    app_version: u32 align(1),
    name: [32]u8 align(1),
    has_icon: u8 align(1),
    icon: [32]u8 align(1),
};

const FlipperApplicationManifest = FlipperApplicationManifestV1;

pub fn createApplicationManifest(stack_size: u16, app_version: u32, comptime name: [*:0]const u8, has_icon: u8, icon: ?[32]u8) FlipperApplicationManifest {
    return FlipperApplicationManifest{
        .base = FlipperManifestBase{
            .manifest_magic = MANIFEST_MAGIC,
            .manifest_version = 1,
            .api_version = API_VERSION,
            .hardware_target_id = 7,
        },
        .stack_size = stack_size,
        .app_version = app_version,
        .name = (mem.span(name) ++ mem.zeroes([32 - mem.len(name)]u8)).*,
        .has_icon = has_icon,
        .icon = icon orelse mem.zeroes([32]u8),
    };
}