{{define "title"}}Add receipt{{end}}
{{define "content"}}
<header>
  <span>{{.Subject}}</span>
  <span><a href="/tally">Tally</a> · <a href="/recent">Recent</a> · <a href="/ai">AI</a> · <a href="/manage">Manage</a> · <a href="/export">Export</a> · <a href="/logout">Log out</a></span>
</header>
<h1>Add receipt</h1>
{{range .Errors}}<div class="err">{{.}}</div>{{end}}
<form method="post" action="/upload" enctype="multipart/form-data" id="upload-form">
  <label for="receipt">Receipt photo or PDF</label>
  <input id="receipt" type="file" name="receipt" accept="image/*,application/pdf" capture="environment" required>
  {{if .ClassifyEnabled}}
  <label class="check"><input type="checkbox" id="skip-ai"> Skip AI auto-fill (enter fields by hand)</label>
  <p class="footnote" id="classify-note">Receipt is read automatically by <code>{{.ClassifyModel}}</code> to pre-fill the fields below — review before submitting.</p>
  {{else}}
  <p class="footnote">Auto-fill is off (no API key configured). Enter the fields manually.</p>
  {{end}}
  <label for="amount">Amount ($)</label>
  <input id="amount" type="number" name="amount" step="0.01" min="0.01" inputmode="decimal" value="{{.Amount}}" required>
  <label for="receipt_date">Date on receipt</label>
  <input id="receipt_date" type="date" name="receipt_date" value="{{.Date}}" required>
  <label for="category_id">Category</label>
  <select id="category_id" name="category_id">
    {{$sc := .CategoryID}}
    {{range .Categories}}<option value="{{.ID}}" {{if eq (printf "%d" .ID) $sc}}selected{{end}}>{{.Label}}</option>{{end}}
  </select>
  <label for="person_id">Who</label>
  <select id="person_id" name="person_id">
    {{$sp := .PersonID}}
    <option value="">—</option>
    {{range .People}}<option value="{{.ID}}" {{if eq (printf "%d" .ID) $sp}}selected{{end}}>{{.Label}}</option>{{end}}
  </select>
  <label>Tags (optional)</label>
  <button type="button" class="tags-btn" id="tags-btn">Add tags</button>
  <span class="tags-summary" id="tags-summary"></span>
  <div id="tags-hidden">
    {{range .TagChips}}{{if .Selected}}<input type="hidden" name="tags" value="{{.Label}}">{{end}}{{end}}
  </div>

  <div class="modal" id="tags-modal" hidden>
    <div class="modal-card">
      <h2>Tags</h2>
      <div class="chips" id="chip-list">
        {{range .TagChips}}<button type="button" class="chip{{if .Selected}} sel{{end}}" data-label="{{.Label}}">{{.Label}}</button>{{end}}
      </div>
      <div class="newtag">
        <input type="text" id="newtag-input" placeholder="Create a tag" autocomplete="off">
        <button type="button" id="newtag-add">Add</button>
      </div>
      <button type="button" class="primary" id="tags-done">Done with tags</button>
    </div>
  </div>

  <label for="attachments">Additional files (optional)</label>
  <input id="attachments" type="file" name="attachments" accept="image/*,application/pdf" multiple>
  <div class="dup-warn" id="dup-warn" hidden>
    <strong>Possible duplicate</strong> — a receipt with this date and amount is already saved:
    <ul id="dup-list"></ul>
    <label class="check"><input type="checkbox" id="dup-ack"> Add it anyway</label>
  </div>
  <input type="hidden" name="classify_json" id="classify_json">
  <button type="submit" class="primary" id="submit-btn">Submit</button>
</form>

<script>
// --- Tag picker: in-page modal with a chip mosaic. Selection is mirrored into
// hidden "tags" inputs so it submits with the rest of the form. ---
(function () {
  var btn = document.getElementById("tags-btn");
  var modal = document.getElementById("tags-modal");
  var chipList = document.getElementById("chip-list");
  var hidden = document.getElementById("tags-hidden");
  var summary = document.getElementById("tags-summary");
  var newInput = document.getElementById("newtag-input");
  var newAdd = document.getElementById("newtag-add");
  var done = document.getElementById("tags-done");

  function chips() { return Array.prototype.slice.call(chipList.querySelectorAll(".chip")); }
  function sync() {
    var labels = chips().filter(function (c) { return c.classList.contains("sel"); })
      .map(function (c) { return c.getAttribute("data-label"); });
    hidden.innerHTML = "";
    labels.forEach(function (l) {
      var i = document.createElement("input");
      i.type = "hidden"; i.name = "tags"; i.value = l;
      hidden.appendChild(i);
    });
    summary.textContent = labels.length ? labels.length + " selected" : "none yet";
  }
  function find(label) {
    var lower = label.toLowerCase();
    return chips().filter(function (c) {
      return c.getAttribute("data-label").toLowerCase() === lower;
    })[0];
  }
  function addNew() {
    var label = newInput.value.trim();
    if (!label) return;
    var existing = find(label);
    if (existing) {
      existing.classList.add("sel");
    } else {
      var c = document.createElement("button");
      c.type = "button"; c.className = "chip sel";
      c.setAttribute("data-label", label); c.textContent = label;
      chipList.appendChild(c);
    }
    newInput.value = "";
    sync();
  }

  chipList.addEventListener("click", function (e) {
    var chip = e.target.closest(".chip");
    if (!chip) return;
    chip.classList.toggle("sel");
    sync();
  });
  newAdd.addEventListener("click", addNew);
  newInput.addEventListener("keydown", function (e) {
    if (e.key === "Enter") { e.preventDefault(); addNew(); }
  });
  btn.addEventListener("click", function () { modal.hidden = false; });
  done.addEventListener("click", function () { modal.hidden = true; });
  modal.addEventListener("click", function (e) {
    if (e.target === modal) modal.hidden = true; // tap the backdrop to close
  });
  sync(); // reflect any pre-selected chips (e.g. carried across an error re-render)
})();
</script>

<script>
(function () {
  var form = document.getElementById("upload-form");
  var amount = document.getElementById("amount");
  var dateEl = document.getElementById("receipt_date");
  var dupWarn = document.getElementById("dup-warn");
  var dupList = document.getElementById("dup-list");
  var dupAck = document.getElementById("dup-ack");
  var submitBtn = document.getElementById("submit-btn");
  var dupVisible = false;

  // --- Duplicate check (runs whenever date + amount are both known) ---
  function updateSubmitState() {
    submitBtn.disabled = dupVisible && !dupAck.checked;
  }
  dupAck.addEventListener("change", updateSubmitState);

  function checkDuplicates() {
    var a = amount.value.trim(), d = dateEl.value.trim();
    if (!a || !d) { hideDup(); return; }
    var url = "/duplicates?date=" + encodeURIComponent(d) + "&amount=" + encodeURIComponent(a);
    fetch(url)
      .then(function (r) { return r.ok ? r.json() : { matches: [] }; })
      .then(function (data) {
        if (!data.matches || !data.matches.length) { hideDup(); return; }
        dupList.innerHTML = "";
        data.matches.forEach(function (m) {
          var li = document.createElement("li");
          var who = m.who ? " · " + m.who : "";
          li.textContent = "$" + m.amount + " · " + m.date + " · " + m.category + who +
            " — " + m.filename + " (uploaded " + m.uploaded + " by " + m.by + ")";
          dupList.appendChild(li);
        });
        dupWarn.hidden = false;
        dupVisible = true;
        dupAck.checked = false;
        updateSubmitState();
      })
      .catch(hideDup);
  }
  function hideDup() {
    dupWarn.hidden = true;
    dupVisible = false;
    updateSubmitState();
  }
  amount.addEventListener("change", checkDuplicates);
  dateEl.addEventListener("change", checkDuplicates);
  checkDuplicates(); // in case the form was pre-filled (e.g. re-render after error)
})();
</script>

{{if .ClassifyEnabled}}
<script>
(function () {
  var fileInput = document.getElementById("receipt");
  var skip = document.getElementById("skip-ai");
  var note = document.getElementById("classify-note");
  var model = {{.ClassifyModel}};
  var baseNote = note.innerHTML;

  skip.addEventListener("change", function () {
    note.style.opacity = skip.checked ? "0.5" : "";
    if (skip.checked) {
      note.textContent = "AI auto-fill skipped — enter the fields by hand.";
      setValue("classify_json", ""); // no AI suggestion to record
    } else {
      note.innerHTML = baseNote;
    }
  });

  fileInput.addEventListener("change", function () {
    setValue("classify_json", ""); // a new file invalidates any prior suggestion
    var file = fileInput.files[0];
    if (!file || skip.checked) return;
    note.style.opacity = "";
    note.textContent = "Reading receipt with " + model + "…";

    var body = new FormData();
    body.append("receipt", file);

    fetch("/classify", { method: "POST", body: body })
      .then(function (resp) {
        if (!resp.ok) throw new Error("classify failed (" + resp.status + ")");
        return resp.json();
      })
      .then(function (d) {
        if (d.amount) setValue("amount", d.amount);
        if (d.date) setValue("receipt_date", d.date);
        if (d.category_id != null) setValue("category_id", String(d.category_id));
        if (d.person_id != null) setValue("person_id", String(d.person_id));
        setValue("classify_json", JSON.stringify(d)); // round-trip for misread review
        var cost = (d.cost_cents != null) ? " · " + d.cost_cents.toFixed(2) + "¢" : "";
        note.textContent = "Pre-filled by " + (d.model || model) + cost + " — review and submit.";
        // Pre-filled date+amount may match an existing receipt — re-check.
        document.getElementById("receipt_date").dispatchEvent(new Event("change"));
      })
      .catch(function (err) {
        note.innerHTML = baseNote;
        var e = document.createElement("span");
        e.className = "err-inline";
        e.textContent = " Auto-fill failed: " + err.message + ". Enter the fields manually.";
        note.appendChild(e);
      });
  });

  function setValue(id, val) {
    var el = document.getElementById(id);
    if (el) el.value = val;
  }
})();
</script>
{{end}}
{{end}}