/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <time.h>

#include <jni.h>

#include <android/log.h>

#include <osl/detail/android-bootstrap.h>

#include <LibreOfficeKit/LibreOfficeKit.h>

#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "LibreOfficeKit", __VA_ARGS__))
#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "LibreOfficeKit", __VA_ARGS__))

/* These are valid / used in all apps. */
extern const char *data_dir;
extern const char *cache_dir;
extern void *apk_file;
extern int apk_file_size;

extern void Java_org_libreoffice_android_Bootstrap_putenv(JNIEnv* env, jobject clazz, jstring string);
extern void Java_org_libreoffice_android_Bootstrap_redirect_1stdio(JNIEnv* env, jobject clazz, jboolean state);

extern LibreOfficeKit *libreofficekit_hook(const char* install_path);

static LibreOfficeKit* pOffice;

/// Call the same method from Bootstrap.
__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_LibreOfficeKit_putenv(JNIEnv* env,
                                              jobject clazz,
                                              jstring string)
{
    Java_org_libreoffice_android_Bootstrap_putenv(env, clazz, string);
}

/// Call the same method from Bootstrap.
__attribute__ ((visibility("default")))
void
Java_org_libreoffice_android_LibreOfficeKit_redirect_1stdio(JNIEnv* env,
                                                            jobject clazz,
                                                            jboolean state)
{
    Java_org_libreoffice_android_Bootstrap_redirect_1stdio(env, clazz, state);
}

/// Initialize the LibreOfficeKit.
__attribute__ ((visibility("default")))
jboolean
Java_org_libreoffice_android_LibreOfficeKit_init__Ljava_lang_String_2Ljava_lang_String_2Ljava_lang_String_2
    (JNIEnv* env,
     jobject clazz,
     jstring dataDir,
     jstring cacheDir,
     jstring apkFile)
{
    struct stat st;
    int fd;
    const char *dataDirPath;
    const char *cacheDirPath;
    const char *apkFilePath;

    (void) clazz;

    dataDirPath = (*env)->GetStringUTFChars(env, dataDir, NULL);
    data_dir = strdup(dataDirPath);
    (*env)->ReleaseStringUTFChars(env, dataDir, dataDirPath);

    cacheDirPath = (*env)->GetStringUTFChars(env, cacheDir, NULL);
    cache_dir = strdup(cacheDirPath);
    (*env)->ReleaseStringUTFChars(env, cacheDir, cacheDirPath);

    apkFilePath =  (*env)->GetStringUTFChars(env, apkFile, NULL);

    fd = open(apkFilePath, O_RDONLY);
    if (fd == -1) {
        LOGE("Could not open %s", apkFilePath);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    if (fstat(fd, &st) == -1) {
        LOGE("Could not fstat %s", apkFilePath);
        close(fd);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    apk_file = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
    close(fd);

    if (apk_file == MAP_FAILED) {
        LOGE("Could not mmap %s", apkFilePath);
        (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
        return JNI_FALSE;
    }
    apk_file_size = st.st_size;

    (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);

    if (!setup_cdir())
    {
        LOGE("setup_cdir failed");
        return JNI_FALSE;
    }

    if (!setup_assets_tree())
    {
        LOGE("setup_assets_tree failed");
        return JNI_FALSE;
    }

    // Extract files from the .apk that can't be used mmapped directly from it
    extract_files(UNPACK_TREE, UNPACK_TREE, 0);
    extract_files(UNPACK_TREE_GZ, UNPACK_TREE_GZ, 1);

    // Initialize LibreOfficeKit
    pOffice = libreofficekit_hook(data_dir);
    if (!pOffice)
    {
        LOGE("libreofficekit_hook returned null");
        return JNI_FALSE;
    }

    LOGI("LibreOfficeKit successfully initialized");

    return JNI_TRUE;
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */