package de.einfachhans.emailcomposer;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.text.Html;
import com.getcapacitor.JSArray;
import com.getcapacitor.JSObject;
import com.getcapacitor.PluginCall;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;

public class EmailComposer {

  private static final String MAILTO_SCHEME = "mailto:";
  private final Context ctx;

  public EmailComposer(Context ctx) {
    this.ctx = ctx;
  }

  public Intent getIntent(PluginCall call) throws JSONException {
    // Subject
    String subject = call.getString("subject", "");

    // Body
    String body = call.getString("body", "");
    CharSequence bodyText = call.getBoolean("isHtml", false) ? Html.fromHtml(body) : body;

    // To
    List<String> toList = call.getArray("to", new JSArray()).toList();
    String[] to = new String[toList.size()];
    to = toList.toArray(to);

    // CC
    List<String> ccList = call.getArray("cc", new JSArray()).toList();
    String[] cc = new String[ccList.size()];
    cc = ccList.toArray(cc);

    // BCC
    List<String> bccList = call.getArray("bcc", new JSArray()).toList();
    String[] bcc = new String[bccList.size()];
    bcc = bccList.toArray(bcc);

    Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(MAILTO_SCHEME));
    intent.putExtra(Intent.EXTRA_SUBJECT, subject);
    intent.putExtra(Intent.EXTRA_TEXT, bodyText);
    intent.putExtra(Intent.EXTRA_EMAIL, to);
    intent.putExtra(Intent.EXTRA_CC, cc);
    intent.putExtra(Intent.EXTRA_BCC, bcc);

    // Attachments
    this.setAttachments(call, intent);

    return intent;
  }

  private void setAttachments(PluginCall call, Intent intent) throws JSONException {
    JSArray attachments = call.getArray("attachments", new JSArray());
    ArrayList<Uri> uris = new ArrayList();
    AssetUtil assets = new AssetUtil(ctx);

    for (int i = 0; i < attachments.length(); i++) {
      JSONObject attachment = attachments.getJSONObject(i);
      String path = attachment.getString("path");
      String type = attachment.getString("type");
      String name = attachment.optString("name");

      Uri uri = assets.parse(path, type, name);
      if (uri != null && uri != Uri.EMPTY) uris.add(uri);
    }

    if (uris.isEmpty()) {
      return;
    }

    intent
      .setAction(Intent.ACTION_SEND_MULTIPLE)
      .setType("*/*")
      .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
      .putExtra(Intent.EXTRA_STREAM, uris);

    if (uris.size() > 1) {
      return;
    }

    intent.setAction(Intent.ACTION_SEND).putExtra(Intent.EXTRA_STREAM, uris.get(0));
  }
}