/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define TRACE_TAG ADB

#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>

#include "client/file_sync_client.h"
#include "commandline.h"
#include "sysdeps.h"

#include "fastdeploycallbacks.h"

static void appendBuffer(std::vector<char>* buffer, const char* input, int length) {
    if (buffer != NULL) {
        buffer->insert(buffer->end(), input, input + length);
    }
}

class DeployAgentBufferCallback : public StandardStreamsCallbackInterface {
  public:
    DeployAgentBufferCallback(std::vector<char>* outBuffer, std::vector<char>* errBuffer,
                              int* statusCode);

    virtual void OnStdout(const char* buffer, int length);
    virtual void OnStderr(const char* buffer, int length);
    virtual int Done(int status);

  private:
    std::vector<char>* mpOutBuffer;
    std::vector<char>* mpErrBuffer;
    int* mpStatusCode;
};

int capture_shell_command(const char* command, std::vector<char>* outBuffer,
                          std::vector<char>* errBuffer) {
    int statusCode;
    DeployAgentBufferCallback cb(outBuffer, errBuffer, &statusCode);
    int ret = send_shell_command(command, false, &cb);

    if (ret == 0) {
        return statusCode;
    } else {
        return ret;
    }
}

DeployAgentFileCallback::DeployAgentFileCallback(FILE* outputFile, std::vector<char>* errBuffer,
                                                 int* statusCode) {
    mpOutFile = outputFile;
    mpErrBuffer = errBuffer;
    mpStatusCode = statusCode;
    mBytesWritten = 0;
}

void DeployAgentFileCallback::OnStdout(const char* buffer, int length) {
    if (mpOutFile != NULL) {
        int bytes_written = fwrite(buffer, 1, length, mpOutFile);
        if (bytes_written != length) {
            printf("Write error %d\n", bytes_written);
        }
        mBytesWritten += bytes_written;
    }
}

void DeployAgentFileCallback::OnStderr(const char* buffer, int length) {
    appendBuffer(mpErrBuffer, buffer, length);
}

int DeployAgentFileCallback::Done(int status) {
    if (mpStatusCode != NULL) {
        *mpStatusCode = status;
    }
    return 0;
}

int DeployAgentFileCallback::getBytesWritten() {
    return mBytesWritten;
}

DeployAgentBufferCallback::DeployAgentBufferCallback(std::vector<char>* outBuffer,
                                                     std::vector<char>* errBuffer,
                                                     int* statusCode) {
    mpOutBuffer = outBuffer;
    mpErrBuffer = errBuffer;
    mpStatusCode = statusCode;
}

void DeployAgentBufferCallback::OnStdout(const char* buffer, int length) {
    appendBuffer(mpOutBuffer, buffer, length);
}

void DeployAgentBufferCallback::OnStderr(const char* buffer, int length) {
    appendBuffer(mpErrBuffer, buffer, length);
}

int DeployAgentBufferCallback::Done(int status) {
    if (mpStatusCode != NULL) {
        *mpStatusCode = status;
    }
    return 0;
}