/*
 * Copyright (c) 2017 TOYOTA MOTOR CORPORATION
 *
 * 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.
 */
#include <iostream>
#include <algorithm>
#include "applist.hpp"
#include "../include/hmi-debug.h"

using std::shared_ptr;
using std::string;
using std::vector;

namespace wm
{

AppList::AppList()
    : req_list(0),
      app2client(0),
      current_req(1)
{
}

AppList::~AppList() {}

void AppList::addClient(const string &appid, const string &role)
{
    shared_ptr<WMClient> client = std::make_shared<WMClient>(appid, role);
    this->app2client[appid] = client;
    this->clientDump();
}

void AppList::addClient(const std::string &appid, unsigned layer, unsigned surface, const std::string &role)
{
    shared_ptr<WMClient> client = std::make_shared<WMClient>(appid, layer, surface, role);
    this->app2client[appid] = client;
    this->clientDump();
}

void AppList::removeClient(const string &appid)
{
    this->app2client.erase(appid);
}

bool AppList::contains(const string &appid)
{
    auto result = this->app2client.find(appid);
    return (this->app2client.end() != result) ? true : false;
}

void AppList::removeSurface(unsigned surface_id){
    // This function may be very slow
    bool ret = false;
    for (auto &x : this->app2client)
    {
        ret = x.second->removeSurfaceIfExist(surface_id);
        if(ret){
            HMI_DEBUG("wm", "remove surface %d from Client %s finish", surface_id, x.second->appID().c_str());
            break;
        }
    }
}

/**
 * @brief  get WMClient object. Before call this function, must call "contains"
 * to check the key is contained, otherwise, you have to take care of std::out_of_range.
 * @param string[in] application id(key)
 * @return WMClient object
 */
shared_ptr<WMClient> AppList::lookUpClient(const string &appid)
{
    return this->app2client.at(appid);
}

int AppList::countClient()
{
    return this->app2client.size();
}

unsigned AppList::currentSequenceNumber()
{
    return this->current_req;
}

// Is this function necessary ?
unsigned AppList::getSequenceNumber(const string &appid)
{
    for (const auto &x : this->req_list)
    {
        // Since app will not request twice and more, comparing appid is enough?
        if ((x.trigger.appid == appid))
        {
            return x.seq_num;
        }
    }
    return 0;
}

unsigned AppList::addAllocateRequest(WMRequest req)
{
    if (this->req_list.size() == 0)
    {
        req.seq_num = current_req;
    }
    else
    {
        HMI_SEQ_DEBUG(this->current_req, "add: %d", this->req_list.back().seq_num + 1);
        req.seq_num = this->req_list.back().seq_num + 1;
    }
    this->req_list.push_back(req);
    return req.seq_num; // return 1; if you test time_expire
}

bool AppList::requestFinished()
{
    return this->req_list.empty();
}

struct WMTrigger AppList::getRequest(unsigned req_num)
{
    for (auto &x : this->req_list)
    {
        if (req_num == x.seq_num)
        {
            return x.trigger;
        }
    }
}

const vector<struct WMAction> &AppList::getActions(unsigned req_num)
{
    for (auto &x : this->req_list)
    {
        if (req_num == x.seq_num)
        {
            return x.sync_draw_req;
        }
    }
}

bool AppList::setAction(unsigned req_num, const struct WMAction &action)
{
    bool result = false;
    for (auto &x : this->req_list)
    {
        if (req_num != x.seq_num)
        {
            continue;
        }
        x.sync_draw_req.push_back(action);
        result = true;
        break;
    }

    return result;
}

bool AppList::setAction(unsigned req_num, const string &appid, const string &role, const string &area, bool visible)
{
    bool result = false;
    for (auto &x : req_list)
    {
        if (req_num != x.seq_num)
        {
            continue;
        }
        bool edraw_f = false;
        WMAction action{appid, role, area, visible, edraw_f};

        x.sync_draw_req.push_back(action);
        result = true;
        break;
    }
    return result;
}

bool AppList::setEndDrawFinished(unsigned req_num, const string &appid, const string &role)
{
    bool result = false;
    for (auto &x : req_list)
    {
        if (req_num < x.seq_num)
        {
            break;
        }
        if (req_num == x.seq_num)
        {
            for (auto &y : x.sync_draw_req)
            {
                if (y.appid == appid && y.role == role)
                {
                    y.end_draw_finished = true;
                    result = true;
                }
            }
        }
    }
    this->reqDump();
    return result;
}

/**
 * @brief  check all actions of the requested sequence is finished
 * @param  unsigned sequence_num
 * @return true if all action is set.
 */
bool AppList::endDrawFullfilled(unsigned req_num)
{
    bool result = false;
    for (const auto &x : req_list)
    {
        if (req_num < x.seq_num)
        {
            break;
        }
        if (req_num == x.seq_num)
        {
            result = true;
            for (const auto &y : x.sync_draw_req)
            {
                result &= y.end_draw_finished;
                if (!result)
                {
                    break;
                }
            }
        }
    }
    return result;
}

void AppList::removeRequest(unsigned req_seq)
{
    this->req_list.erase(remove_if(this->req_list.begin(), this->req_list.end(),
                                   [req_seq](WMRequest x) {
                                       return x.seq_num == req_seq;
                                   }));
}

void AppList::next()
{
    ++this->current_req;
    if (0 == this->current_req)
    {
        this->current_req = 1;
    }
}

bool AppList::haveRequest()
{
    return !this->req_list.empty();
}

void AppList::clientDump()
{
    DUMP("======= client dump =====");
    for (const auto &x : this->app2client)
    {
        const auto &y = x.second;
        y->dumpInfo();
    }
    DUMP("======= client dump end=====");
}

void AppList::reqDump()
{
    DUMP("======= req dump =====");
    DUMP("current request : %d", current_req);
    for (const auto &x : req_list)
    {
        DUMP("requested with  : %d", x.seq_num);
        DUMP("Trigger : (APPID :%s, ROLE :%s, AREA :%s, TASK: %d)",
             x.trigger.appid.c_str(),
             x.trigger.role.c_str(),
             x.trigger.area.c_str(),
             x.trigger.task);

        for (const auto &y : x.sync_draw_req)
        {
            DUMP(
                "Action  : (APPID :%s, ROLE :%s, AREA :%s, END_DRAW_FINISHED: %d)",
                y.appid.c_str(),
                y.role.c_str(),
                y.area.c_str(),
                y.end_draw_finished);
        }
    }
    DUMP("======= req dump end =====\n");
}
} // namespace wm