// MASTER PLAN GOOGLE APPS SCRIPT - IKAN LELE V3 (SINKRONISASI TOTAL)
function doGet(e) {
  try {
    var ss = SpreadsheetApp.getActiveSpreadsheet();
    ensureSheetsExist(ss);
    
    // 1. Data Tautan (Master_Tautan)
    var sheetLinks = ss.getSheetByName("Master_Tautan");
    var dataLinks = sheetLinks.getDataRange().getValues();
    var links = [];
    var globalLogo = "";
    
    for (var i = 1; i < dataLinks.length; i++) {
      if (dataLinks[i][0] !== "" && dataLinks[i][0] !== null) {
        links.push({
          id: dataLinks[i][0],
          title: dataLinks[i][1],
          url: dataLinks[i][2],
          category: dataLinks[i][3],
          type: dataLinks[i][4] || 'leaflet',
          icon: dataLinks[i][5],
          clicks: parseInt(dataLinks[i][6] || 0),
          active: dataLinks[i][7] === true || dataLinks[i][7] === "TRUE" || dataLinks[i][7] === "true"
        });
        
        if (!globalLogo && dataLinks[i][8] && dataLinks[i][8].toString().trim() !== "") {
          globalLogo = dataLinks[i][8].toString().trim();
        }
      }
    }
    
    // 2. Data Pengaturan (Pengaturan)
    var sheetSettings = ss.getSheetByName("Pengaturan");
    var settings = { logo: globalLogo };
    if (sheetSettings) {
      var sData = sheetSettings.getDataRange().getValues();
      for (var j = 1; j < sData.length; j++) {
        if (sData[j][0]) {
          settings[sData[j][0]] = sData[j][1];
        }
      }
    }
    
    // 3. Log Pengunjung & Wilayah (Log_Pengunjung)
    var sheetVisitors = ss.getSheetByName("Log_Pengunjung");
    var dataVisitors = sheetVisitors.getDataRange().getValues();
    var totalVisitors = Math.max(0, dataVisitors.length - 1);
    
    var dailyLogs = {};
    var regions = {};
    
    for (var k = 1; k < dataVisitors.length; k++) {
      var row = dataVisitors[k];
      if (row[0]) {
        var dateObj = new Date(row[0]);
        if (!isNaN(dateObj.getTime())) {
          var dateKey = Utilities.formatDate(dateObj, Session.getScriptTimeZone(), "yyyy-MM-dd");
          if (!dailyLogs[dateKey]) dailyLogs[dateKey] = { visitors: 0, clicks: 0 };
          dailyLogs[dateKey].visitors += 1;
        }
      }
      var regName = row[2] ? row[2].toString().trim() : "Kab. Sinjai";
      if (regName) {
        regions[regName] = (regions[regName] || 0) + 1;
      }
    }
    
    // 4. Log Klik (Log_Klik) untuk Tren Aktivitas
    var sheetClicks = ss.getSheetByName("Log_Klik");
    var dataClicks = sheetClicks.getDataRange().getValues();
    for (var m = 1; m < dataClicks.length; m++) {
      var cRow = dataClicks[m];
      if (cRow[0]) {
        var cDateObj = new Date(cRow[0]);
        if (!isNaN(cDateObj.getTime())) {
          var cDateKey = Utilities.formatDate(cDateObj, Session.getScriptTimeZone(), "yyyy-MM-dd");
          if (!dailyLogs[cDateKey]) dailyLogs[cDateKey] = { visitors: 0, clicks: 0 };
          dailyLogs[cDateKey].clicks += 1;
        }
      }
    }
    
    var result = {
      status: "success",
      links: links,
      settings: settings,
      totalVisitors: totalVisitors,
      dailyLogs: dailyLogs,
      regions: regions
    };
    
    return ContentService.createTextOutput(JSON.stringify(result)).setMimeType(ContentService.MimeType.JSON);
  } catch (err) {
    return ContentService.createTextOutput(JSON.stringify({ status: "error", message: err.toString() })).setMimeType(ContentService.MimeType.JSON);
  }
}

function doPost(e) {
  try {
    var ss = SpreadsheetApp.getActiveSpreadsheet();
    ensureSheetsExist(ss);
    
    var data = {};
    if (e && e.postData && e.postData.contents) {
      data = JSON.parse(e.postData.contents);
    }
    var action = data.action || data.event_type;
    
    if (action === "log_visitor") {
      ss.getSheetByName("Log_Pengunjung").appendRow([new Date(), data.ip || "127.0.0.1", data.location || "Sinjai", data.device || "Mobile"]);
    } 
    else if (action === "log_click") {
      ss.getSheetByName("Log_Klik").appendRow([new Date(), data.link_id, data.link_title, data.location || "Sinjai"]);
      incrementClickCount(ss, data.link_id);
    }
    else if (action === "save_link") {
      saveOrUpdateLink(ss, data.link);
    }
    else if (action === "delete_link") {
      deleteLink(ss, data.link_id);
    }
    else if (action === "save_settings") {
      saveSettings(ss, data.settings);
    }
    
    return ContentService.createTextOutput(JSON.stringify({ status: "success" })).setMimeType(ContentService.MimeType.JSON);
  } catch(err) {
    return ContentService.createTextOutput(JSON.stringify({ status: "error", message: err.toString() })).setMimeType(ContentService.MimeType.JSON);
  }
}

function ensureSheetsExist(ss) {
  if (!ss.getSheetByName("Master_Tautan")) {
    var s1 = ss.insertSheet("Master_Tautan");
    s1.appendRow(["ID", "Judul", "URL_Tautan", "Kategori", "Tipe_Materi", "Ikon", "Jumlah_Klik", "Status_Aktif", "Logo_URL"]);
  }
  if (!ss.getSheetByName("Log_Pengunjung")) {
    ss.insertSheet("Log_Pengunjung").appendRow(["Waktu", "IP_Address", "Kota_Wilayah", "Perangkat"]);
  }
  if (!ss.getSheetByName("Log_Klik")) {
    ss.insertSheet("Log_Klik").appendRow(["Waktu", "ID_Tautan", "Judul_Materi", "Lokasi_Pengunjung"]);
  }
  if (!ss.getSheetByName("Pengaturan")) {
    ss.insertSheet("Pengaturan").appendRow(["Kunci", "Nilai"]);
  }
}

function incrementClickCount(ss, linkId) {
  var sheet = ss.getSheetByName("Master_Tautan");
  var data = sheet.getDataRange().getValues();
  for (var i = 1; i < data.length; i++) {
    if (data[i][0] == linkId) {
      var currentVal = parseInt(data[i][6] || 0);
      sheet.getRange(i + 1, 7).setValue(currentVal + 1);
      break;
    }
  }
}

function saveOrUpdateLink(ss, link) {
  if (!link) return;
  var sheet = ss.getSheetByName("Master_Tautan");
  var data = sheet.getDataRange().getValues();
  var found = false;
  for (var i = 1; i < data.length; i++) {
    if (data[i][0] == link.id) {
      sheet.getRange(i + 1, 2).setValue(link.title);
      sheet.getRange(i + 1, 3).setValue(link.url);
      sheet.getRange(i + 1, 4).setValue(link.category);
      sheet.getRange(i + 1, 5).setValue(link.type || 'leaflet');
      sheet.getRange(i + 1, 6).setValue(link.icon);
      sheet.getRange(i + 1, 8).setValue(link.active);
      found = true;
      break;
    }
  }
  if (!found) {
    sheet.appendRow([link.id, link.title, link.url, link.category, link.type || 'leaflet', link.icon, link.clicks || 0, link.active, ""]);
  }
}

function deleteLink(ss, linkId) {
  var sheet = ss.getSheetByName("Master_Tautan");
  var data = sheet.getDataRange().getValues();
  for (var i = 1; i < data.length; i++) {
    if (data[i][0] == linkId) {
      sheet.deleteRow(i + 1);
      break;
    }
  }
}

function saveSettings(ss, settings) {
  if (!settings) return;
  var sheetP = ss.getSheetByName("Pengaturan");
  var dataP = sheetP.getDataRange().getValues();
  
  for (var key in settings) {
    var val = settings[key];
    if (key === "logo") {
      var sheetM = ss.getSheetByName("Master_Tautan");
      if (sheetM.getLastRow() >= 2) {
        sheetM.getRange(2, 9).setValue(val);
      } else {
        sheetM.appendRow(["", "", "", "", "", "", "", "", val]);
      }
    }
    
    var found = false;
    for (var i = 1; i < dataP.length; i++) {
      if (dataP[i][0] == key) {
        sheetP.getRange(i + 1, 2).setValue(val);
        found = true;
        break;
      }
    }
    if (!found) {
      sheetP.appendRow([key, val]);
      dataP = sheetP.getDataRange().getValues();
    }
  }
}