// Configure your import map in config/importmap.rb. Read more:
// https://github.com/rails/importmap-rails
import "@hotwired/turbo-rails"


/* Hide page before loaded for testing purposes */
function showPage(event) {
  document.documentElement.style.visibility="visible"
}
document.addEventListener('turbo:load', showPage)

function groupMeasurements() {
  var tbody = document.getElementById('measurements');
  if (!tbody) return;
  var prevTakenAt = null;
  Array.from(tbody.querySelectorAll('tr[data-taken-at]'))
    .filter(function(row) { return row.style.display !== 'none' })
    .forEach(function(row) {
      var takenAt = row.dataset.takenAt;
      row.classList.toggle('grouped', takenAt !== null && takenAt === prevTakenAt);
      prevTakenAt = takenAt;
    });
}

function buildWideTable() {
  var tbody = document.getElementById('measurements');
  var wideContainer = document.getElementById('measurements-wide');
  if (!tbody || !wideContainer) return;

  var rows = Array.from(tbody.querySelectorAll('tr[data-taken-at]'));

  if (rows.length === 0) { wideContainer.innerHTML = ''; return; }

  // Unique quantities in alphabetical order
  var qOrder = [], qSeen = new Set();
  rows.forEach(function(r) {
    var id = r.dataset.quantityId;
    if (id && !qSeen.has(id)) { qSeen.add(id); qOrder.push({id: id, name: r.dataset.quantityName}); }
  });
  qOrder.sort(function(a, b) { return a.name.localeCompare(b.name); });

  // Group rows by taken_at, preserving order
  var groups = [], groupMap = new Map();
  rows.forEach(function(r) {
    var key = r.dataset.takenAt || '';
    if (!groupMap.has(key)) { var g = {rows: []}; groups.push(g); groupMap.set(key, g); }
    groupMap.get(key).rows.push(r);
  });

  var takenAtHeader = (document.querySelector('[data-column="taken-at"]') || {}).textContent || '';
  var createdAtHeader = (document.querySelector('[data-column="created-at"]') || {}).textContent || '';

  var table = document.createElement('table');
  table.className = 'items-table';

  // Header
  var thead = table.createTHead();
  var hrow = thead.insertRow();
  [takenAtHeader].concat(qOrder.map(function(q) { return q.name; })).concat([createdAtHeader]).forEach(function(text) {
    var th = document.createElement('th');
    th.textContent = text;
    hrow.appendChild(th);
  });

  // Body
  var tbodyEl = table.createTBody();
  groups.forEach(function(group) {
    var tr = tbodyEl.insertRow();

    // Taken at
    var tdTime = tr.insertCell();
    var takenAtEl = group.rows[0].querySelector('.taken-at');
    tdTime.textContent = takenAtEl ? takenAtEl.textContent : '';

    // One cell per quantity
    qOrder.forEach(function(q) {
      var td = tr.insertCell();
      var readoutRow = group.rows.find(function(r) { return r.dataset.quantityId === q.id; });
      if (readoutRow) {
        td.className = 'ralign';
        var wrap = document.createElement('span');
        wrap.className = 'wide-cell';
        var editLink = readoutRow.querySelector('a.link');
        if (editLink) {
          var editUrl = editLink.href + (editLink.href.includes('?') ? '&' : '?') + 'view=wide';
          var btn = document.createElement('button');
          btn.className = 'link';
          btn.type = 'button';
          btn.dataset.editUrl = editUrl;
          btn.addEventListener('click', function() { editMeasurementWide(this.dataset.editUrl); this.blur(); });
          btn.textContent = readoutRow.dataset.value;
          wrap.appendChild(btn);
          wrap.appendChild(document.createTextNode('\u00a0' + readoutRow.dataset.unit));
        } else {
          wrap.appendChild(document.createTextNode(readoutRow.dataset.value + '\u00a0' + readoutRow.dataset.unit));
        }
        var srcActions = readoutRow.querySelector('td.flex');
        if (srcActions) srcActions.querySelectorAll('form').forEach(function(f) {
          var cloned = f.cloneNode(true);
          var span = cloned.querySelector('button span');
          if (span) span.remove();
          wrap.appendChild(cloned);
        });
        td.appendChild(wrap);
      }
    });

    // Created at (from first row of group)
    var tdCreated = tr.insertCell();
    var createdAtEl = group.rows[0].querySelector('.created-at');
    tdCreated.textContent = createdAtEl ? createdAtEl.textContent : '';
  });

  wideContainer.innerHTML = '';
  wideContainer.appendChild(table);
}

function buildCharts() {
  var container = document.getElementById('measurements-charts');
  var dataEl = document.getElementById('charts-data');
  if (!container || !dataEl) return;

  var readouts = JSON.parse(dataEl.textContent);
  container.innerHTML = '';
  if (readouts.length === 0) return;

  // Data arrives sorted by taken_at from the server; group into per-quantity traces
  var quantities = new Map();
  readouts.forEach(function(r) {
    if (!r.takenAt) return;
    if (!quantities.has(r.quantityId)) {
      quantities.set(r.quantityId, { name: r.quantityName, unit: r.unit, x: [], y: [] });
    }
    var q = quantities.get(r.quantityId);
    q.x.push(r.takenAt);
    q.y.push(r.value);
  });

  var traces = [];
  quantities.forEach(function(q) {
    traces.push({
      x: q.x,
      y: q.y,
      mode: 'lines+markers',
      type: 'scatter',
      name: q.name + ' (' + q.unit + ')',
      marker: { size: 5 }
    });
  });

  var div = document.createElement('div');
  div.className = 'chart-panel';
  container.appendChild(div);

  Plotly.newPlot(div, traces, {
    xaxis: { type: 'date', tickformat: '%Y-%m-%d %H:%M' },
    yaxis: {},
    margin: { t: 20, r: 20, b: 80, l: 60 },
    paper_bgcolor: 'transparent',
    plot_bgcolor: 'transparent',
    font: { family: 'system-ui' },
    legend: { orientation: 'h', y: -0.25 }
  }, { responsive: true, displayModeBar: false });
}

function getMeasurementsView() {
  return localStorage.getItem('measurements-view') || 'compact';
}

function applyMeasurementsView(view) {
  document.body.dataset.measurementsView = view;
  if (view === 'wide') buildWideTable();
}

function setMeasurementsView(view) {
  localStorage.setItem('measurements-view', view);
  applyMeasurementsView(view);
}
window.setMeasurementsView = setMeasurementsView

document.addEventListener('turbo:load', function() {
  if (document.getElementById('charts-data')) {
    buildCharts();
    return;
  }
  var tbody = document.getElementById('measurements');
  if (!tbody) return;
  groupMeasurements();
  applyMeasurementsView(getMeasurementsView());
  new MutationObserver(function() {
    groupMeasurements();
    var view = getMeasurementsView();
    if (view === 'wide') buildWideTable();
  }).observe(tbody, {
    childList: true, subtree: true,
    attributes: true, attributeFilter: ['style']
  });
})

function detailsChange(event) {
  var target = event.currentTarget
  var count = target.querySelectorAll('input:checked:not([disabled])').length
  var span = target.querySelector('summary > span')
  var button = target.querySelector('button')
  if (count > 0) {
    span.textContent = count + ' selected';
    Turbo.StreamElement.prototype.enableElement(button)
  } else {
    span.textContent = span.getAttribute('data-prompt')
    Turbo.StreamElement.prototype.disableElement(button)
  }
}
window.detailsChange = detailsChange

/* Close open <details> when focus lost */
function detailsClose(event) {
  if (!event.relatedTarget ||
      event.relatedTarget.closest("details") != event.currentTarget) {
    event.currentTarget.removeAttribute("open")
  }
}
window.detailsClose = detailsClose

window.detailsObserver = new MutationObserver((mutations) => {
  mutations[0].target.dispatchEvent(new Event('change', {bubbles: true}))
});

function editMeasurementWide(url) {
  fetch(url, {
    headers: {
      'Accept': 'text/vnd.turbo-stream.html',
      'X-Requested-With': 'XMLHttpRequest'
    }
  })
  .then(response => response.text())
  .then(html => {
    Turbo.renderStreamMessage(html);
    requestAnimationFrame(() => {
      var panel = document.getElementById('measurement_edit_form');
      if (panel && panel.firstElementChild) {
        panel.scrollIntoView({behavior: 'smooth', block: 'nearest'});
      }
    });
  })
  .catch(err => console.error('editMeasurementWide failed:', err));
}
window.editMeasurementWide = editMeasurementWide

function readoutUnitChanged(select) {
  var button = select.closest('tr').querySelector('.set-default-unit');
  if (select.value && select.value !== select.dataset.defaultUnitId) {
    button.removeAttribute('disabled');
    button.removeAttribute('aria-disabled');
    button.removeAttribute('tabindex');
  } else {
    button.setAttribute('disabled', 'disabled');
    button.setAttribute('aria-disabled', 'true');
    button.setAttribute('tabindex', '-1');
  }
}
window.readoutUnitChanged = readoutUnitChanged

function setDefaultUnit(button) {
  var select = button.closest('tr').querySelector('select[data-default-unit-id]');
  var params = new URLSearchParams();
  params.append('quantity[default_unit_id]', select.value);

  fetch(button.dataset.path, {
    body: params,
    headers: {
      'Accept': 'text/vnd.turbo-stream.html',
      'X-CSRF-Token': document.head.querySelector('meta[name=csrf-token]').content,
      'X-Requested-With': 'XMLHttpRequest'
    },
    method: 'PATCH'
  })
  .then(response => {
    if (response.ok) {
      select.dataset.defaultUnitId = select.value;
      readoutUnitChanged(select);
    }
    return response.text();
  })
  .then(html => Turbo.renderStreamMessage(html))
  .catch(err => console.error('setDefaultUnit failed:', err));
}
window.setDefaultUnit = setDefaultUnit

function formValidate(event) {
  var id = event.submitter.getAttribute("data-validate")
  if (!id) return;

  var input = document.getElementById(id)
  if (!input.checkValidity()) {
    input.reportValidity()
    event.preventDefault()
  }
}
window.formValidate = formValidate


/* Turbo stream actions */
Turbo.StreamElement.prototype.disableElement = function(element) {
    element.setAttribute("disabled", "disabled")
    element.setAttribute("aria-disabled", "true")
    element.setAttribute("tabindex", "-1")
}
Turbo.StreamActions.disable = function() {
  this.targetElements.forEach((e) => { this.disableElement(e) })
}

Turbo.StreamElement.prototype.enableElement = function(element) {
    element.removeAttribute("disabled")
    element.removeAttribute("aria-disabled")
    // Assume 'tabindex' is not used explicitly, so removing it is safe
    element.removeAttribute("tabindex")
}
Turbo.StreamActions.enable = function() {
  this.targetElements.forEach((e) => { this.enableElement(e) })
}

/* TODO: change to visibility = collapse to avoid width change? */
Turbo.StreamActions.hide = function() {
  this.targetElements.forEach((e) => { e.style.display = "none" })
}

Turbo.StreamActions.show = function() {
  this.targetElements.forEach((e) => { e.style.removeProperty("display") })
}

/*
Turbo.StreamActions.collapse = function() {
  this.targetElements.forEach((e) => { e.style.visibility = "collapse" })
}
*/

Turbo.StreamActions.close_form = function() {
  this.targetElements.forEach((e) => {
    /* Move focus if there's no focus or focus inside form being closed */
    const focused = document.activeElement
    if (!focused || (focused == document.body) || e.contains(focused)) {
      let nextForm = e.parentElement.querySelector(`#${e.id} ~ tr:has([autofocus])`)
      nextForm ??= e.parentElement.querySelector("tr:has([autofocus])")
      nextForm?.querySelector("[autofocus]").focus()
    }
    document.getElementById(e.getAttribute("data-form")).remove()
    if (e.hasAttribute("data-link")) {
      this.enableElement(document.getElementById(e.getAttribute("data-link")))
    }
    if (e.hasAttribute("data-hidden-row")) {
      document.getElementById(e.getAttribute("data-hidden-row")).removeAttribute("style")
    }
    e.remove()
  })
}

Turbo.StreamActions.unselect = function() {
  this.targetElements.forEach((e) => {
    e.checked = false
    this.enableElement(e)
  })
}

function formProcessKey(event) {
  switch (event.key) {
    case "Escape":
      event.currentTarget.querySelector("a[name=cancel]").click()
      break
    case "Enter":
      event.currentTarget.querySelector("button[name=button]").click()
      event.preventDefault()
      break
  }
}
window.formProcessKey = formProcessKey

function detailsProcessKey(event) {
  // TODO: up/down arrows to move focus to prev/next line
  switch (event.key) {
    case "Escape":
      if (event.currentTarget.hasAttribute("open")) {
        event.currentTarget.removeAttribute("open")
        event.stopPropagation()
      }
      break
    case "Enter":
      var button = event.currentTarget.querySelector("button:not([disabled])")
      if (button) {
        button.click()
        // Autofocus won't be respected unless target is blurred
        event.target.blur()
        event.preventDefault()
        event.stopPropagation()
      }
      break
  }
}
window.detailsProcessKey = detailsProcessKey;

/* Items table drag and drop support */
var lastEnterTime
function dragStart(event) {
  lastEnterTime = event.timeStamp
  var row = event.currentTarget
  row.closest("table").querySelectorAll("thead tr").forEach((tr) => {
    tr.toggleAttribute("hidden")
  })
  event.dataTransfer.setData("text/plain", row.getAttribute("data-drag-path"))
  var rowRectangle = row.getBoundingClientRect()
  event.dataTransfer.setDragImage(row, event.x - rowRectangle.left, event.y - rowRectangle.top)
  event.dataTransfer.dropEffect = "move"
}
window.dragStart = dragStart

/*
* Drag tracking assumptions (based on FF 122.0 experience):
*   * Enter/Leave events at the same timeStamp may not be logically ordered
*     (e.g. E -> E -> L, not E -> L -> E),
*   * not every Enter event has corresponding Leave event, especially during
*     rapid pointer moves
* NOTE: sometimes Leave is not emitted when pointer goes fast over table
* and outside. This should probably be fixed in browser, than patched here.
*/
function dragEnter(event) {
  //console.log(event.timeStamp + " " + event.type + ": " + event.currentTarget.id)
  dragLeave(event)
  lastEnterTime = event.timeStamp
  const id = event.currentTarget.getAttribute("data-drop-id")
  document.getElementById(id).classList.add("dropzone")
}
window.dragEnter = dragEnter

function dragOver(event) {
  event.preventDefault()
}
window.dragOver = dragOver

function dragLeave(event) {
  //console.log(event.timeStamp + " " + event.type + ": " + event.currentTarget.id)
  // Leave has been accounted for by Enter at the same timestamp, processed earlier
  if (event.timeStamp <= lastEnterTime) return
  event.currentTarget.closest("table").querySelectorAll(".dropzone").forEach((tr) => {
    tr.classList.remove("dropzone")
  })
}
window.dragLeave = dragLeave

function dragEnd(event) {
  dragLeave(event)
  event.currentTarget.closest("table").querySelectorAll("thead tr").forEach((tr) => {
    tr.toggleAttribute("hidden")
  })
}
window.dragEnd = dragEnd

function drop(event) {
  event.preventDefault()

  var params = new URLSearchParams()
  var id_param = event.currentTarget.getAttribute("data-drop-id-param")
  var id = event.currentTarget.getAttribute("data-drop-id").split("_").pop()
  params.append(id_param, id)

  fetch(event.dataTransfer.getData("text/plain"), {
    body: params,
    headers: {
      "Accept": "text/vnd.turbo-stream.html",
      "X-CSRF-Token": document.head.querySelector("meta[name=csrf-token]").content,
      "X-Requested-With": "XMLHttpRequest"
    },
    method: "POST"
  })
  .then(response => response.text())
  .then(html => Turbo.renderStreamMessage(html))
}
window.drop = drop