import React, { useMemo, useState } from "react";
import { html, partnerGroupChipLabel } from "./constants.js";
import { api, authHeaders } from "./api.js";
import { RoleChip, StatusText, ConfirmDialog } from "./components.js";

export function SettingsView({
  auth,
  user,
  status,
  selectedRoles,
  roleSearchInput,
  onRoleSearch,
  roleSearchItems,
  saveRoleMutation,
  onPhotoPreference,
  logout,
  onDeleted,
  setStatus,
}) {
  const [busy, setBusy] = useState("");
  const [confirmDelete, setConfirmDelete] = useState(false);
  const sharingSummary = useMemo(() => {
    const groups = user?.partner_groups || [];
    return groups.map((group) => {
      const others = (group.participant_ids || []).filter((id) => id && id !== auth.userId);
      const visibleTo = group.my_share_full_list ? others : [];
      const visibleFrom = (group.sharing_member_ids || []).filter((id) => id && id !== auth.userId);
      return { group, visibleTo, visibleFrom };
    });
  }, [user?.partner_groups, auth.userId]);

  async function handleExport() {
    try {
      setBusy("export");
      const payload = await api(`/users/${auth.userId}/export`, { headers: authHeaders(auth.token) });
      const blob = new Blob([JSON.stringify(payload, null, 2)], { type: "application/json" });
      const url = URL.createObjectURL(blob);
      const a = document.createElement("a");
      a.href = url;
      a.download = `${auth.userId}-export.json`;
      document.body.appendChild(a);
      a.click();
      a.remove();
      URL.revokeObjectURL(url);
      setStatus("Export downloaded.");
    } catch (error) {
      setStatus(error.message);
    } finally {
      setBusy("");
    }
  }

  async function handleDelete() {
    try {
      setBusy("delete");
      await api(`/users/${auth.userId}`, {
        method: "DELETE",
        headers: authHeaders(auth.token),
      });
      setStatus("Account deleted.");
      onDeleted?.();
    } catch (error) {
      setStatus(error.message);
    } finally {
      setBusy("");
      setConfirmDelete(false);
    }
  }

  return html`
    <${ConfirmDialog}
      open=${confirmDelete}
      title="Delete your account?"
      body="This deletes your profile, all plays, and all partner connections. This cannot be undone."
      confirmLabel=${busy === "delete" ? "Deleting…" : "Delete forever"}
      cancelLabel="Keep account"
      destructive=${true}
      onConfirm=${handleDelete}
      onCancel=${() => setConfirmDelete(false)}
    />
    <div data-testid="settings-view">
      <div className="top-bar">
        <div>
          <div className="top-bar-title">Settings</div>
          <div className="tiny">Privacy, roles, and account controls</div>
        </div>
      </div>

      <div className="stack">
        <div className="card stack">
          <div>
            <div className="tiny">Profile ID</div>
            <code className="settings-code">${auth.userId}</code>
          </div>
          <label className="discover-photo-toggle settings-toggle">
            <input
              data-testid="settings-show-images-toggle"
              type="checkbox"
              checked=${user?.preferences?.show_images ?? true}
              onChange=${(e) => onPhotoPreference?.(e.target.checked)}
            />
            <span>Show photos on cards</span>
          </label>
          <button className="ghost sm" onClick=${logout}>Log out</button>
        </div>

        <div className="card stack">
          <div>
            <strong>Roles</strong>
            <div className="tiny">Optional. These help with framing, not matching.</div>
          </div>
          <input
            data-testid="settings-role-search"
            placeholder="Search roles..."
            value=${roleSearchInput}
            onInput=${(e) => onRoleSearch(e.target.value)}
          />
          ${selectedRoles.length
            ? html`
                <div className="chip-flow">
                  ${selectedRoles.map((item) => html`
                    <${RoleChip}
                      key=${item.id}
                      kink=${item}
                      selected=${true}
                      onToggle=${(id, selected) => saveRoleMutation.mutate({ kinkId: id, selected })}
                    />
                  `)}
                </div>
              `
            : html`<div className="tiny">No roles selected.</div>`}
          ${roleSearchItems.length
            ? html`
                <div className="chip-flow">
                  ${roleSearchItems.map((item) => html`
                    <${RoleChip}
                      key=${item.kink.id}
                      kink=${item.kink}
                      selected=${false}
                      onToggle=${(id, selected) => saveRoleMutation.mutate({ kinkId: id, selected })}
                    />
                  `)}
                </div>
              `
            : null}
        </div>

        <div className="card stack">
          <div>
            <strong>Sharing</strong>
            <div className="tiny">Private by default. Full-list sharing is group-specific.</div>
          </div>
          ${sharingSummary.length
            ? html`
                <div className="stack-sm">
                  ${sharingSummary.map(({ group, visibleTo, visibleFrom }) => html`
                    <div key=${group.id} className="settings-share-row">
                      <div>
                        <div className="settings-share-title">${partnerGroupChipLabel(group, auth.userId)}</div>
                        <div className="tiny">
                          ${visibleTo.length ? `They can view my list: ${visibleTo.join(", ")}` : "They cannot view my full list"}
                        </div>
                        <div className="tiny">
                          ${visibleFrom.length ? `I can view: ${visibleFrom.join(", ")}` : "I cannot view anyone else's full list"}
                        </div>
                      </div>
                    </div>
                  `)}
                </div>
              `
            : html`<div className="tiny">No partner groups yet.</div>`}
        </div>

        <div className="card stack">
          <div>
            <strong>Data</strong>
            <div className="tiny">Export your data or remove the account entirely.</div>
          </div>
          <div className="row" style=${{ gap: 8, flexWrap: "wrap" }}>
            <button data-testid="settings-export-data" onClick=${handleExport} disabled=${busy === "export"}>${busy === "export" ? "Exporting…" : "Export data"}</button>
            <button className="ghost" data-testid="settings-delete-account" onClick=${() => setConfirmDelete(true)}>Delete account</button>
          </div>
        </div>

        <${StatusText} text=${status} />
      </div>
    </div>
  `;
}