// Type definitions for Emscripten 1.39.5
// Project: http://kripken.github.io/emscripten-site/index.html
// Definitions by: Kensuke Matsuzaki <https://github.com/zakki>
//                 Periklis Tsirakidis <https://github.com/periklis>
//                 Bumsik Kim <https://github.com/kbumsik>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.2

/** Other WebAssembly declarations, for compatibility with older versions of Typescript */
declare namespace WebAssembly {
    interface Module { }
}

declare namespace Emscripten {
    interface FileSystemType {
    }
    type EnvironmentType = "WEB" | "NODE" | "SHELL" | "WORKER";

    type JSType = "number" | "string" | "array" | "boolean";
    type TypeCompatibleWithC = number | string | any[] | boolean;

    type CIntType = 'i8' | 'i16' | 'i32' | 'i64';
    type CFloatType = 'float' | 'double';
    type CPointerType = 'i8*' | 'i16*' | 'i32*' | 'i64*' | 'float*' | 'double*' | '*';
    type CType =  CIntType | CFloatType | CPointerType;

    type WebAssemblyImports =  Array<{
        name: string;
        kind: string;
    }>;

    type WebAssemblyExports = Array<{
        module: string;
        name: string;
        kind: string;
    }>;

    interface CCallOpts {
        async?: boolean;
    }
}

interface EmscriptenModule {
    /**
     * Initializes an EmscriptenModule object and returns it. The initialized
     * obejct will be passed to then(). Works only when -s MODULARIZE=1 is
     * enabled. This is default exported function when -s EXPORT_ES6=1 is
     * enabled.
     * https://emscripten.org/docs/getting_started/FAQ.html#how-can-i-tell-when-the-page-is-fully-loaded-and-it-is-safe-to-call-compiled-functions
     * @param moduleOverrides Properties of an initialized module to override.
     */
    (moduleOverrides?: Partial<this>): this;
    /**
     * Promise-like then() inteface.
     * WRANGING: Emscripten's then() is not really promise-based 'thenable'.
     * Don't try to use it with Promise.resolve() or in an async function
     * without deleting delete Module["then"] in the callback.
     * https://github.com/kripken/emscripten/issues/5820
     * Works only when -s MODULARIZE=1 is enabled.
     * @param callback A callback chained from Module() with an Module instance.
     */
    then(callback: (module: this) => void): this;

    print(str: string): void;
    printErr(str: string): void;
    arguments: string[];
    environment: Emscripten.EnvironmentType;
    preInit: Array<{ (): void }>;
    preRun: Array<{ (): void }>;
    postRun: Array<{ (): void }>;
    onAbort: { (what: any): void };
    onRuntimeInitialized: { (): void };
    preinitializedWebGLContext: WebGLRenderingContext;
    noInitialRun: boolean;
    noExitRuntime: boolean;
    logReadFiles: boolean;
    filePackagePrefixURL: string;
    wasmBinary: ArrayBuffer;

    destroy(object: object): void;
    getPreloadedPackage(remotePackageName: string, remotePackageSize: number): ArrayBuffer;
    instantiateWasm(
        imports: Emscripten.WebAssemblyImports,
        successCallback: (module: WebAssembly.Module) => void
    ): Emscripten.WebAssemblyExports;
    locateFile(url: string, scriptDirectory: string): string;
    onCustomMessage(event: MessageEvent): void;

    // USE_TYPED_ARRAYS == 1
    HEAP: Int32Array;
    IHEAP: Int32Array;
    FHEAP: Float64Array;

    // USE_TYPED_ARRAYS == 2
    HEAP8: Int8Array;
    HEAP16: Int16Array;
    HEAP32: Int32Array;
    HEAPU8: Uint8Array;
    HEAPU16: Uint16Array;
    HEAPU32: Uint32Array;
    HEAPF32: Float32Array;
    HEAPF64: Float64Array;

    TOTAL_STACK: number;
    TOTAL_MEMORY: number;
    FAST_MEMORY: number;

    addOnPreRun(cb: () => any): void;
    addOnInit(cb: () => any): void;
    addOnPreMain(cb: () => any): void;
    addOnExit(cb: () => any): void;
    addOnPostRun(cb: () => any): void;

    preloadedImages: any;
    preloadedAudios: any;

    _malloc(size: number): number;
    _free(ptr: number): void;
}

// By default Emscripten emits a single global Module.  Users setting -s
// MODULARIZE=1 -s EXPORT_NAME=MyMod should declare their own types, e.g.
// declare var MyMod: EmscriptenModule;
declare var Module: EmscriptenModule;

declare namespace FS {
    interface Lookup {
        path: string;
        node: FSNode;
    }

    interface FSStream {}
    interface FSNode {}
    interface ErrnoError {}

    let ignorePermissions: boolean;
    let trackingDelegate: any;
    let tracking: any;
    let genericErrors: any;

    //
    // paths
    //
    function lookupPath(path: string, opts: any): Lookup;
    function getPath(node: FSNode): string;

    //
    // nodes
    //
    function isFile(mode: number): boolean;
    function isDir(mode: number): boolean;
    function isLink(mode: number): boolean;
    function isChrdev(mode: number): boolean;
    function isBlkdev(mode: number): boolean;
    function isFIFO(mode: number): boolean;
    function isSocket(mode: number): boolean;

    //
    // devices
    //
    function major(dev: number): number;
    function minor(dev: number): number;
    function makedev(ma: number, mi: number): number;
    function registerDevice(dev: number, ops: any): void;

    //
    // core
    //
    function syncfs(populate: boolean, callback: (e: any) => any): void;
    function syncfs(callback: (e: any) => any, populate?: boolean): void;
    function mount(type: Emscripten.FileSystemType, opts: any, mountpoint: string): any;
    function unmount(mountpoint: string): void;

    function mkdir(path: string, mode?: number): any;
    function mkdev(path: string, mode?: number, dev?: number): any;
    function symlink(oldpath: string, newpath: string): any;
    function rename(old_path: string, new_path: string): void;
    function rmdir(path: string): void;
    function readdir(path: string): any;
    function unlink(path: string): void;
    function readlink(path: string): string;
    function stat(path: string, dontFollow?: boolean): any;
    function lstat(path: string): any;
    function chmod(path: string, mode: number, dontFollow?: boolean): void;
    function lchmod(path: string, mode: number): void;
    function fchmod(fd: number, mode: number): void;
    function chown(path: string, uid: number, gid: number, dontFollow?: boolean): void;
    function lchown(path: string, uid: number, gid: number): void;
    function fchown(fd: number, uid: number, gid: number): void;
    function truncate(path: string, len: number): void;
    function ftruncate(fd: number, len: number): void;
    function utime(path: string, atime: number, mtime: number): void;
    function open(path: string, flags: string, mode?: number, fd_start?: number, fd_end?: number): FSStream;
    function close(stream: FSStream): void;
    function llseek(stream: FSStream, offset: number, whence: number): any;
    function read(stream: FSStream, buffer: ArrayBufferView, offset: number, length: number, position?: number): number;
    function write(stream: FSStream, buffer: ArrayBufferView, offset: number, length: number, position?: number, canOwn?: boolean): number;
    function allocate(stream: FSStream, offset: number, length: number): void;
    function mmap(stream: FSStream, buffer: ArrayBufferView, offset: number, length: number, position: number, prot: number, flags: number): any;
    function ioctl(stream: FSStream, cmd: any, arg: any): any;
    function readFile(path: string, opts: { encoding: "binary", flags?: string }): Uint8Array;
    function readFile(path: string, opts: { encoding: "utf8", flags?: string }): string;
    function readFile(path: string, opts?: { flags?: string }): Uint8Array;
    function writeFile(path: string, data: string | ArrayBufferView, opts?: { flags?: string }): void;

    //
    // module-level FS code
    //
    function cwd(): string;
    function chdir(path: string): void;
    function init(
        input: null | (() => number | null),
        output: null | ((c: number) => any),
        error: null | ((c: number) => any),
    ): void;

    function createLazyFile(parent: string | FSNode, name: string, url: string, canRead: boolean, canWrite: boolean): FSNode;
    function createPreloadedFile(parent: string | FSNode, name: string, url: string,
        canRead: boolean, canWrite: boolean, onload?: () => void, onerror?: () => void, dontCreateFile?: boolean, canOwn?: boolean): void;
    function createDataFile(parent: string | FSNode, name: string, data: ArrayBufferView, canRead: boolean, canWrite: boolean, canOwn: boolean): FSNode;
}

declare var MEMFS: Emscripten.FileSystemType;
declare var NODEFS: Emscripten.FileSystemType;
declare var IDBFS: Emscripten.FileSystemType;

// Below runtime function/variable declarations are exportable by
// -s EXTRA_EXPORTED_RUNTIME_METHODS. You can extend or merge
// EmscriptenModule interface to add runtime functions.
//
// For example, by using -s "EXTRA_EXPORTED_RUNTIME_METHODS=['ccall']"
// You can access ccall() via Module["ccall"]. In this case, you should
// extend EmscriptenModule to pass the compiler check like the following:
//
// interface YourOwnEmscriptenModule extends EmscriptenModule {
//     ccall: typeof ccall;
// }
//
// See: https://emscripten.org/docs/getting_started/FAQ.html#why-do-i-get-typeerror-module-something-is-not-a-function

declare function ccall(ident: string, returnType: Emscripten.JSType | null, argTypes: Emscripten.JSType[], args: Emscripten.TypeCompatibleWithC[], opts?: Emscripten.CCallOpts): any;
declare function cwrap(ident: string, returnType: Emscripten.JSType | null, argTypes: Emscripten.JSType[], opts?: Emscripten.CCallOpts): (...args: any[]) => any;

declare function setValue(ptr: number, value: any, type: Emscripten.CType, noSafe?: boolean): void;
declare function getValue(ptr: number, type: Emscripten.CType, noSafe?: boolean): number;

declare function allocate(slab: number[] | ArrayBufferView | number, types: Emscripten.CType | Emscripten.CType[], allocator: number, ptr?: number): number;

declare function stackAlloc(size: number): number;
declare function stackSave(): number;
declare function stackRestore(ptr: number): void;

declare function UTF8ToString(ptr: number, maxBytesToRead?: number): string;
declare function stringToUTF8(str: string, outPtr: number, maxBytesToRead?: number): void;
declare function lengthBytesUTF8(str: string): number;
declare function allocateUTF8(str: string): number;
declare function allocateUTF8OnStack(str: string): number;
declare function UTF16ToString(ptr: number): string;
declare function stringToUTF16(str: string, outPtr: number, maxBytesToRead?: number): void;
declare function lengthBytesUTF16(str: string): number;
declare function UTF32ToString(ptr: number): string;
declare function stringToUTF32(str: string, outPtr: number, maxBytesToRead?: number): void;
declare function lengthBytesUTF32(str: string): number;

declare function intArrayFromString(stringy: string, dontAddNull?: boolean, length?: number): number[];
declare function intArrayToString(array: number[]): string;
declare function writeStringToMemory(str: string, buffer: number, dontAddNull: boolean): void;
declare function writeArrayToMemory(array: number[], buffer: number): void;
declare function writeAsciiToMemory(str: string, buffer: number, dontAddNull: boolean): void;

declare function addRunDependency(id: any): void;
declare function removeRunDependency(id: any): void;

declare function addFunction(func: (...args: any[]) => any, signature?: string): number;
declare function removeFunction(funcPtr: number): void;

declare var ALLOC_NORMAL: number;
declare var ALLOC_STACK: number;
declare var ALLOC_STATIC: number;
declare var ALLOC_DYNAMIC: number;
declare var ALLOC_NONE: number;