#pragma once

#include <iostream>

#include "json/single_include/nlohmann/json.hpp"

#include "statuscode-tostring.hpp"
#include "barrier.hpp"

struct TaskData {
    // thread placement / engine selection
    uint8_t numa_node;
    // region size and source+destination for move
    size_t size;
    uint8_t nnode_src;
    uint8_t nnode_dst;
    // repetition
    uint32_t rep_count;
    bool batch_submit;
    uint32_t batch_size;
    uint32_t barrier_after_n_operations;
    // thread output
    dml::status_code status;
    // average run duration in microseconds
    double combined_duration;
    double submit_duration;
    double complete_duration;
    // completed iterations
    uint32_t rep_completed;
    // set by execution
    barrier* barrier_;
};

inline void to_json(nlohmann::json& j, const TaskData& a) {
    j["task"]["size"] = a.size;
    j["task"]["iterations"] = a.rep_count;
    j["task"]["batching"]["enabled"] = a.batch_submit;
    j["task"]["batching"]["batch_size"] = a.batch_size;
    j["task"]["batching"]["barrier_after_n_operations"] = a.barrier_after_n_operations;
    j["affinity"]["node"] = a.numa_node;
    j["affinity"]["nnode_src"] = a.nnode_src;
    j["affinity"]["nnode_dst"] = a.nnode_dst;
    j["report"]["time"]["unit"] = "microseconds";
    j["report"]["time"]["completion_avg"] = a.complete_duration;
    j["report"]["time"]["submission_avg"] = a.submit_duration;
    j["report"]["time"]["combined_avg"] = a.combined_duration;
    j["report"]["iterations_completed"] = a.rep_completed;
    j["report"]["status"] = StatusCodeToString(a.status);
}

inline void from_json(const nlohmann::json& j, TaskData& a) {
    j["task"]["size"].get_to(a.size);
    j["task"]["iterations"].get_to(a.rep_count);
    j["task"]["batching"]["enabled"].get_to(a.batch_submit);
    j["task"]["batching"]["batch_size"].get_to(a.batch_size);
    j["task"]["batching"]["barrier_after_n_operations"].get_to(a.barrier_after_n_operations);
    j["affinity"]["node"].get_to(a.numa_node);
    j["affinity"]["nnode_src"].get_to(a.nnode_src);
    j["affinity"]["nnode_dst"].get_to(a.nnode_dst);
}

inline void WriteResultLog(const std::vector<TaskData>& args, const std::string& path, std::ostream& os) {
    nlohmann::json json;

    json["count"] = args.size();
    json["path"] = path;
    json["list"] = args;

    os << std::setw(4) << json;
}

inline void ReadWorkDescription(std::vector<TaskData>& args, std::string& path, std::istream& is) {
    nlohmann::json json;
    is >> json;

    const uint32_t count = json.at("count");
    args.resize(count);
    path = json.at("path");

    for (uint32_t i = 0; i < count; i++) {
        args[i] = json["list"][i].template get<TaskData>();
    }
}