#include "events_html.h"
#include <limits>
#include "../../datalayer/datalayer.h"
#include "../../devboard/utils/logging.h"
#include "../../devboard/utils/millis64.h"

const char EVENTS_HTML_START[] = R"=====(
<style>body{background-color:#000;color:#fff}.event-log{display:flex;flex-direction:column}.event{display:flex;flex-wrap:wrap;border:1px solid #fff;padding:10px}.event>div{flex:1;min-width:100px;max-width:90%;word-break:break-word}</style><div style="background-color:#303e47;padding:10px;margin-bottom:10px;border-radius:25px"><div class="event-log"><div class="event" style="background-color:#1e2c33;font-weight:700"><div>Event Type</div><div>Severity</div><div>Last Event</div><div>Count</div><div>Data</div><div>Message</div></div>
)=====";
const char EVENTS_HTML_END[] = R"=====(
</div></div>
<style> button { background-color: #505E67; color: white; border: none; padding: 10px 20px; margin-bottom: 20px; cursor: pointer; border-radius: 10px; }
button:hover { background-color: #3A4A52; }</style>
<button onclick="askClear()">Clear all events</button>
<button onclick="home()">Back to main page</button>
<style>.event:nth-child(even){background-color:#455a64}.event:nth-child(odd){background-color:#394b52}</style>
<script>function showEvent(){document.querySelectorAll(".event").forEach(function(e){var n=e.querySelector(".sec-ago");n&&(n.innerText=new Date(Number(BigInt(Date.now()) - BigInt(n.innerText))).toLocaleString())})}function askClear(){window.confirm("Are you sure you want to clear all events?")&&(window.location.href="/clearevents")}function home(){window.location.href="/"}window.onload=function(){showEvent()}
</script>
)=====";

static std::vector<EventData> order_events;

String events_processor(const String& var) {
  if (var == "X") {
    String content = "";
    content.reserve(5000);
    // Page format
    content.concat(FPSTR(EVENTS_HTML_START));
    const EVENTS_STRUCT_TYPE* event_pointer;

    //clear the vector
    order_events.clear();
    // Collect all events
    for (int i = 0; i < EVENT_NOF_EVENTS; i++) {
      event_pointer = get_event_pointer((EVENTS_ENUM_TYPE)i);
      if (event_pointer->occurences > 0) {
        order_events.push_back({static_cast<EVENTS_ENUM_TYPE>(i), event_pointer});
      }
    }
    // Sort events by timestamp
    std::sort(order_events.begin(), order_events.end(), compareEventsByTimestampDesc);
    uint64_t current_timestamp = millis64();

    // Generate HTML and debug output
    for (const auto& event : order_events) {
      EVENTS_ENUM_TYPE event_handle = event.event_handle;
      event_pointer = event.event_pointer;

      content.concat("<div class='event'>");
      content.concat("<div>" + String(get_event_enum_string(event_handle)) + "</div>");
      content.concat("<div>" + String(get_event_level_string(event_handle)) + "</div>");
      // Frontend expects to see time difference (in ms) from now to event
      content.concat("<div class='sec-ago'>" + String(current_timestamp - event_pointer->timestamp) + "</div>");
      content.concat("<div>" + String(event_pointer->occurences) + "</div>");
      content.concat("<div>" + String(event_pointer->data) + "</div>");
      content.concat("<div>" + get_event_message_string(event_handle) + "</div>");
      content.concat("</div>");  // End of event row
    }

    //clear the vector
    order_events.clear();
    content.concat(FPSTR(EVENTS_HTML_END));
    return content;
  }
  return String();
}

/* Script for displaying event log before it gets minified
<button onclick="askClear()">Clear all events</button>
<button onclick="home()">Back to main page</button>
<style>
    .event:nth-child(even) {
        background-color: #455a64;
    }
    .event:nth-child(odd) {
        background-color: #394b52;
    }
</style>
<script>
    function showEvent() {
        document.querySelectorAll(".event").forEach(function (e) {
            var n = e.querySelector(".sec-ago");
            n && (n.innerText = new Date(Number(BigInt(Date.now()) - BigInt(n.innerText))).toLocaleString());
        });
    }
    function askClear() { 
        if (window.confirm('Are you sure you want to clear all events?')) {
            window.location.href = '/clearevents';
        } 
    }
    function home() {
        window.location.href = "/";
    }
    window.onload = function () {
        showEvent();
    };
</script>
*/