/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

/**
 * Test simple requests using the protocol helpers.
 */
var protocol = require("devtools/shared/protocol");
var {RetVal, Arg, Option} = protocol;
var events = require("sdk/event/core");
var {LongStringActor} = require("devtools/server/actors/string");

// The test implicitly relies on this.
require("devtools/shared/fronts/string");

function simpleHello() {
  return {
    from: "root",
    applicationType: "xpcshell-tests",
    traits: [],
  };
}

DebuggerServer.LONG_STRING_LENGTH = DebuggerServer.LONG_STRING_INITIAL_LENGTH = DebuggerServer.LONG_STRING_READ_LENGTH = 5;

var SHORT_STR = "abc";
var LONG_STR = "abcdefghijklmnop";

var rootActor = null;

const rootSpec = protocol.generateActorSpec({
  typeName: "root",

  events: {
    "string-event": {
      str: Arg(0, "longstring")
    }
  },

  methods: {
    shortString: {
      response: { value: RetVal("longstring") },
    },
    longString: {
      response: { value: RetVal("longstring") },
    },
    emitShortString: {
      oneway: true,
    },
    emitLongString: {
      oneway: true,
    }
  }
});

var RootActor = protocol.ActorClassWithSpec(rootSpec, {
  initialize: function (conn) {
    rootActor = this;
    protocol.Actor.prototype.initialize.call(this, conn);
    // Root actor owns itself.
    this.manage(this);
    this.actorID = "root";
  },

  sayHello: simpleHello,

  shortString: function () {
    return new LongStringActor(this.conn, SHORT_STR);
  },

  longString: function () {
    return new LongStringActor(this.conn, LONG_STR);
  },

  emitShortString: function () {
    events.emit(this, "string-event", new LongStringActor(this.conn, SHORT_STR));
  },

  emitLongString: function () {
    events.emit(this, "string-event", new LongStringActor(this.conn, LONG_STR));
  },
});

var RootFront = protocol.FrontClassWithSpec(rootSpec, {
  initialize: function (client) {
    this.actorID = "root";
    protocol.Front.prototype.initialize.call(this, client);
    // Root owns itself.
    this.manage(this);
  }
});

function run_test()
{
  DebuggerServer.createRootActor = (conn => {
    return RootActor(conn);
  });

  DebuggerServer.init();
  let trace = connectPipeTracing();
  let client = new DebuggerClient(trace);
  let rootClient;

  let strfront = null;

  let expectRootChildren = function (size) {
    do_check_eq(rootActor.__poolMap.size, size + 1);
    do_check_eq(rootClient.__poolMap.size, size + 1);
  };


  client.connect().then(([applicationType, traits]) => {
    rootClient = RootFront(client);

    // Root actor has no children yet.
    expectRootChildren(0);

    trace.expectReceive({"from":"<actorid>", "applicationType":"xpcshell-tests", "traits":[]});
    do_check_eq(applicationType, "xpcshell-tests");
    rootClient.shortString().then(ret => {
      trace.expectSend({"type":"shortString", "to":"<actorid>"});
      trace.expectReceive({"value":"abc", "from":"<actorid>"});

      // Should only own the one reference (itself) at this point.
      expectRootChildren(0);
      strfront = ret;
    }).then(() => {
      return strfront.string();
    }).then(ret => {
      do_check_eq(ret, SHORT_STR);
    }).then(() => {
      return rootClient.longString();
    }).then(ret => {
      trace.expectSend({"type":"longString", "to":"<actorid>"});
      trace.expectReceive({"value":{"type":"longString", "actor":"<actorid>", "length":16, "initial":"abcde"}, "from":"<actorid>"});

      strfront = ret;
      // Should own a reference to itself and an extra string now.
      expectRootChildren(1);
    }).then(() => {
      return strfront.string();
    }).then(ret => {
      trace.expectSend({"type":"substring", "start":5, "end":10, "to":"<actorid>"});
      trace.expectReceive({"substring":"fghij", "from":"<actorid>"});
      trace.expectSend({"type":"substring", "start":10, "end":15, "to":"<actorid>"});
      trace.expectReceive({"substring":"klmno", "from":"<actorid>"});
      trace.expectSend({"type":"substring", "start":15, "end":20, "to":"<actorid>"});
      trace.expectReceive({"substring":"p", "from":"<actorid>"});

      do_check_eq(ret, LONG_STR);
    }).then(() => {
      return strfront.release();
    }).then(() => {
      trace.expectSend({"type":"release", "to":"<actorid>"});
      trace.expectReceive({"from":"<actorid>"});

      // That reference should be removed now.
      expectRootChildren(0);
    }).then(() => {
      let deferred = promise.defer();
      rootClient.once("string-event", (str) => {
        trace.expectSend({"type":"emitShortString", "to":"<actorid>"});
        trace.expectReceive({"type":"string-event", "str":"abc", "from":"<actorid>"});

        do_check_true(!!str);
        strfront = str;
        // Shouldn't generate any new references
        expectRootChildren(0);
        // will generate no packets.
        strfront.string().then((value) => { deferred.resolve(value); });
      });
      rootClient.emitShortString();
      return deferred.promise;
    }).then(value => {
      do_check_eq(value, SHORT_STR);
    }).then(() => {
      // Will generate no packets
      return strfront.release();
    }).then(() => {
      let deferred = promise.defer();
      rootClient.once("string-event", (str) => {
        trace.expectSend({"type":"emitLongString", "to":"<actorid>"});
        trace.expectReceive({"type":"string-event", "str":{"type":"longString", "actor":"<actorid>", "length":16, "initial":"abcde"}, "from":"<actorid>"});

        do_check_true(!!str);
        // Should generate one new reference
        expectRootChildren(1);
        strfront = str;
        strfront.string().then((value) => {
          trace.expectSend({"type":"substring", "start":5, "end":10, "to":"<actorid>"});
          trace.expectReceive({"substring":"fghij", "from":"<actorid>"});
          trace.expectSend({"type":"substring", "start":10, "end":15, "to":"<actorid>"});
          trace.expectReceive({"substring":"klmno", "from":"<actorid>"});
          trace.expectSend({"type":"substring", "start":15, "end":20, "to":"<actorid>"});
          trace.expectReceive({"substring":"p", "from":"<actorid>"});

          deferred.resolve(value);
        });
      });
      rootClient.emitLongString();
      return deferred.promise;
    }).then(value => {
      do_check_eq(value, LONG_STR);
    }).then(() => {
      return strfront.release();
    }).then(() => {
      trace.expectSend({"type":"release", "to":"<actorid>"});
      trace.expectReceive({"from":"<actorid>"});
      expectRootChildren(0);
    }).then(() => {
      client.close().then(() => {
        do_test_finished();
      });
    }).then(null, err => {
      do_report_unexpected_exception(err, "Failure executing test");
    });
  });
  do_test_pending();
}
