// Metro module 12721 (f12722).
import { assign, Buf8, arraySet, shrinkBuf, flattenChunks } from "./Module12712";
import * as _ZStream from "./ZStream";
import * as _InflateState from "./InflateState";
import { inflateInit2, inflateGetHeader, inflateSetDictionary, inflateEnd } from "./InflateState";
import { Z_OK, Z_FINISH, Z_NO_FLUSH, Z_NEED_DICT, Z_BUF_ERROR, Z_STREAM_END, Z_SYNC_FLUSH } from "./Module12725";
import * as _Module12716 from "./Module12716";
import * as _GZheader from "./GZheader";
import { binstring2buf, string2buf, utf8border, buf2string } from "./Module12720";
let toString;
const Inflate = function Inflate(a0) {
  if (this instanceof Inflate) {
    this.options = assign({
      chunkSize: 16384,
      windowBits: 0,
      to: ""
    }, a0 ? a0 : {});
    const options = this.options;
    if (options.raw && options.windowBits >= 0 && options.windowBits < 16) {
      options.windowBits = -options.windowBits;
      if (options.windowBits === 0) {
        options.windowBits = -15;
      }
    }
    const r3 = options.windowBits >= 0 && options.windowBits < 16;
    if (!(r3 ? a0 ? a0.windowBits : a0 : !r3)) {
      options.windowBits = options.windowBits + 32;
    }
    if (options.windowBits > 15 && options.windowBits < 48 && !(15 & options.windowBits)) {
      options.windowBits = options.windowBits | 15;
    }
    this.err = 0;
    this.msg = "";
    this.ended = false;
    this.chunks = [];
    this.strm = new _ZStream();
    this.strm.avail_out = 0;
    const r66 = inflateInit2(this.strm, options.windowBits);
    if (r66 !== Z_OK) {
      throw new Error(_Module12716[r66]);
    }
    this.header = new _GZheader();
    inflateGetHeader(this.strm, this.header);
    return void 0;
  }
  const r17 = {
    __proto__: Inflate.prototype
  };
  const r18 = Inflate.call(r17, a0);
  return r18 instanceof Object ? r18 : r17;
};
export function inflate(a0, a1) {
  const r2 = {
    __proto__: Inflate.prototype
  };
  const r6 = Inflate.call(r2, a1);
  const r7 = r6 instanceof Object ? r6 : r2;
  r7.push(a0, true);
  if (r7.err) {
    throw r7.msg || _Module12716[r7.err];
  }
  return r7.result;
}
toString = Object.prototype.toString;
Inflate.prototype.push = function(a0, a1) {
  let r25, r177;
  const strm = this.strm;
  const chunkSize = this.options.chunkSize;
  const dictionary = this.options.dictionary;
  if (this.ended) {
    return false;
  }
  let r16 = a1 !== ~~a1 ? a1 === true ? Z_FINISH : Z_NO_FLUSH : a1;
  if (typeof a0 === "string") {
    strm.input = binstring2buf(a0);
  } else {
    const call = toString.call;
    if (toString.call(a0) === "[object ArrayBuffer]") {
      strm.input = new Uint8Array(a0);
    } else {
      strm.input = a0;
    }
  }
  strm.next_in = 0;
  strm.avail_in = strm.input.length;
  let r6 = false;
  while (true) {
    const avail_out = strm.avail_out;
    let r2 = r6;
    if (avail_out === 0) {
      strm.output = new Buf8(chunkSize);
      strm.next_out = 0;
      strm.avail_out = chunkSize;
    }
    let r86 = _InflateState.inflate(strm, Z_NO_FLUSH);
    if (r86 === Z_NEED_DICT && dictionary) {
      if (typeof dictionary === "string") {
        r25 = string2buf(dictionary);
      } else {
        const call2 = toString.call;
        r25 = toString.call(dictionary) === "[object ArrayBuffer]" ? new Uint8Array(dictionary) : dictionary;
      }
      r86 = inflateSetDictionary(this.strm, r25);
    }
    if (r86 === Z_BUF_ERROR && r2 === true) {
      r86 = Z_OK;
      r2 = false;
    }
    if (r86 !== Z_STREAM_END && r86 !== Z_OK) {
      this.onEnd(r86);
      this.ended = true;
      return false;
    }
    if (strm.next_out && !(strm.avail_out !== 0 && r86 !== Z_STREAM_END && (strm.avail_in !== 0 || r16 !== Z_FINISH && r16 !== Z_SYNC_FLUSH))) {
      if (this.options.to === "string") {
        const r28 = utf8border(strm.output, strm.next_out);
        const next_out = strm.next_out - r28;
        const r148 = buf2string(strm.output, r28);
        strm.next_out = next_out;
        strm.avail_out = chunkSize - next_out;
        if (next_out) {
          arraySet(strm.output, strm.output, r28, next_out, 0);
        }
        this.onData(r148);
      } else {
        this.onData(shrinkBuf(strm.output, strm.next_out));
      }
    }
    if (strm.avail_in === 0 && strm.avail_out === 0) {
      r2 = true;
    }
    if (!(!(strm.avail_in > 0) && strm.avail_out !== 0)) {
      r6 = r2;
      if (r86 !== Z_STREAM_END) {
        continue;
      }
    }
    if (r86 === Z_STREAM_END) {
      r16 = Z_FINISH;
    }
    if (r16 === Z_FINISH) {
      const r187 = inflateEnd(this.strm);
      this.onEnd(r187);
      this.ended = true;
      r177 = r187 === Z_OK;
    } else {
      r177 = r16 !== Z_SYNC_FLUSH;
      if (!r177) {
        this.onEnd(Z_OK);
        strm.avail_out = 0;
        r177 = true;
      }
    }
    return r177;
  }
};
Inflate.prototype.onData = function(a0) {
  this.chunks.push(a0);
};
Inflate.prototype.onEnd = function(a0) {
  if (a0 === Z_OK) {
    if (this.options.to === "string") {
      this.result = this.chunks.join("");
    } else {
      this.result = flattenChunks(this.chunks);
    }
  }
  this.chunks = [];
  this.err = a0;
  this.msg = this.strm.msg;
};
export { Inflate };
export function inflateRaw(a0, a1) {
  const r5 = a1 ? a1 : {};
  r5.raw = true;
  const r6 = {
    __proto__: Inflate.prototype
  };
  const r7 = Inflate.call(r6, r5);
  const r8 = r7 instanceof Object ? r7 : r6;
  r8.push(a0, true);
  if (r8.err) {
    throw r8.msg || _Module12716[r8.err];
  }
  return r8.result;
}
export { inflate as ungzip };