/*:
 * @plugindesc [Dazed Translations] Hot-reload PSData/RDData/GameSetting JSON and refresh cached save data. Press F5 in-game.
 * @author DazedTranslations
 *
 * @help
 * Press F9 while in-game to:
 *   1. Reload Nupu_PSData.json, RdData.json, and Nupu_GameSetting.json from disk
 *   2. Refresh all mail text in $gameSystem.AllMailList from updated PSData
 *   3. Reset the MemoryDatas cache so it rebuilds from updated PSData
 *   4. Show a confirmation message on screen
 *
 * This allows translation changes to take effect on existing saves
 * without starting a new game or restarting the application.
 */

(function() {
    'use strict';

    var RELOAD_KEY = 120; // F9

    // =========================================================================
    // 1. Reload a JSON data file from disk (synchronous for reliability)
    // =========================================================================
    function reloadDataFile(globalName, src) {
        var xhr = new XMLHttpRequest();
        var url = 'data/' + src;
        xhr.open('GET', url, false); // synchronous
        xhr.overrideMimeType('application/json');
        xhr.send();
        if (xhr.status < 400) {
            window[globalName] = JSON.parse(xhr.responseText);
            DataManager.onLoad(window[globalName]);
            return true;
        }
        return false;
    }

    // =========================================================================
    // 2. Refresh mail text in save data from updated PSData
    // =========================================================================
    function refreshMailData() {
        if (!$gameSystem || !$gameSystem.AllMailList) return 0;
        if (!$Nupu_PSData || !$Nupu_PSData.MailDatas) return 0;

        var updated = 0;
        for (var i = 0; i < $gameSystem.AllMailList.length; i++) {
            var savedMail = $gameSystem.AllMailList[i];
            if (savedMail.ToolNo == null || savedMail.ToolNo < 0) continue;

            // Find matching PSData entry by ToolNo
            for (var j = 0; j < $Nupu_PSData.MailDatas.length; j++) {
                var srcMail = $Nupu_PSData.MailDatas[j];
                if (srcMail.No === savedMail.ToolNo) {
                    // Update translatable text fields
                    savedMail.ChrStr = srcMail.Name;
                    savedMail.MTitle = srcMail.Title;
                    savedMail.MNaiyo = srcMail.MailText;

                    // Update picture descriptions if present
                    if (srcMail.PicDatas && savedMail.PicData) {
                        for (var k = 0; k < srcMail.PicDatas.length && k < savedMail.PicData.length; k++) {
                            savedMail.PicData[k].PicDesc = srcMail.PicDatas[k].PicDesc;
                        }
                    }
                    updated++;
                    break;
                }
            }
        }
        return updated;
    }

    // =========================================================================
    // 3. Reset MemoryDatas cache so it rebuilds from fresh PSData
    // =========================================================================
    function resetMemoryCache() {
        // MemoryDatas is a module-level var in JsScript122Set.js
        // Setting it to null forces SetMemoryDatas() to rebuild it
        if (typeof MemoryDatas !== 'undefined') {
            MemoryDatas = null;
        }
    }

    // =========================================================================
    // 4. Show on-screen notification
    // =========================================================================
    function showReloadNotification(mailCount) {
        var msg = '[DazedTranslations] Data reloaded!';
        if (mailCount > 0) {
            msg += ' Updated ' + mailCount + ' mail(s) in save.';
        }
        // Use the map's display message if available
        if (typeof SceneManager._scene !== 'undefined' && SceneManager._scene._mapNameWindow) {
            // Fallback: just use console + a brief window text
        }
        console.log(msg);
        // Show a brief HUD message using a sprite
        var scene = SceneManager._scene;
        if (scene) {
            var sprite = new Sprite(new Bitmap(Graphics.width, 40));
            sprite.bitmap.fontSize = 18;
            sprite.bitmap.textColor = '#00ff88';
            sprite.bitmap.outlineColor = '#000000';
            sprite.bitmap.outlineWidth = 4;
            sprite.bitmap.drawText(msg, 10, 5, Graphics.width - 20, 30, 'left');
            sprite.y = 10;
            sprite.opacity = 255;
            scene.addChild(sprite);

            // Fade out after 3 seconds
            var frames = 0;
            var fadeInterval = setInterval(function() {
                frames++;
                if (frames > 180) { // 3 seconds at 60fps
                    sprite.opacity -= 5;
                    if (sprite.opacity <= 0) {
                        scene.removeChild(sprite);
                        clearInterval(fadeInterval);
                    }
                }
            }, 1000 / 60);
        }
    }

    // =========================================================================
    // 5. Main reload function
    // =========================================================================
    function performDataReload() {
        console.log('[DazedTranslations] Reloading data files...');

        // Reload all three data files
        var ok1 = reloadDataFile('$Nupu_PSData', 'Nupu_PSData.json');
        var ok2 = reloadDataFile('$RDData', 'RdData.json');
        var ok3 = reloadDataFile('$Nupu_GameSetting', 'Nupu_GameSetting.json');

        console.log('[DazedTranslations] PSData: ' + (ok1 ? 'OK' : 'FAIL') +
                     ', RDData: ' + (ok2 ? 'OK' : 'FAIL') +
                     ', GameSetting: ' + (ok3 ? 'OK' : 'FAIL'));

        // Refresh cached data in save
        var mailCount = refreshMailData();
        resetMemoryCache();

        showReloadNotification(mailCount);
    }

    // =========================================================================
    // 6. Hook into the key input system
    // =========================================================================
    var _SceneManager_onKeyDown = SceneManager.onKeyDown;
    SceneManager.onKeyDown = function(event) {
        if (event.keyCode === RELOAD_KEY) {
            event.preventDefault();
            performDataReload();
            return;
        }
        _SceneManager_onKeyDown.call(this, event);
    };

})();