NativeFastPrinterModule.java
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package com.foodlabel.nativeprinter;
import com.alibaba.fastjson.JSONObject;
import com.foodlabel.nativeprinter.debug.NativePrintDebugState;
import com.foodlabel.nativeprinter.support.PluginResult;
import com.foodlabel.nativeprinter.support.SafeJson;
import com.foodlabel.nativeprinter.support.ThrowableUtils;
import com.foodlabel.nativeprinter.template.NativeTemplateCommandBuilder;
import com.foodlabel.nativeprinter.transport.GprinterBluetoothTransport;
import com.taobao.weex.annotation.JSMethod;
import com.taobao.weex.bridge.JSCallback;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import android.util.Base64;
import io.dcloud.feature.uniapp.common.UniModule;
public class NativeFastPrinterModule extends UniModule {
private static final String BACKEND = "gprinter-sdk";
private static final String PLUGIN_VERSION = "1.2.0";
private static final Object LOCK = new Object();
private static final ExecutorService PRINT_EXECUTOR = Executors.newSingleThreadExecutor();
private static final NativePrintDebugState DEBUG_STATE = new NativePrintDebugState(BACKEND, PLUGIN_VERSION);
private static final GprinterBluetoothTransport BLUETOOTH_TRANSPORT = new GprinterBluetoothTransport();
@JSMethod(uiThread = false)
public void connect(JSONObject params, JSCallback callback) {
String deviceId = SafeJson.getString(params, "deviceId", "");
String deviceName = SafeJson.getString(params, "deviceName", "");
PluginResult result = ensureConnected(deviceId, deviceName);
if (callback != null) {
callback.invoke(result.toJsonString());
}
}
@JSMethod(uiThread = false)
public void disconnect(JSCallback callback) {
synchronized (LOCK) {
BLUETOOTH_TRANSPORT.disconnect();
DEBUG_STATE.clearCurrentDevice();
DEBUG_STATE.setStage("disconnect:ok");
DEBUG_STATE.clearError();
}
if (callback != null) {
callback.invoke(debugResult(PluginResult.ok(false, "", "", "disconnect:ok")).toJsonString());
}
}
@JSMethod(uiThread = false)
public void isConnected(JSCallback callback) {
boolean connected;
synchronized (LOCK) {
connected = BLUETOOTH_TRANSPORT.isConnected();
}
if (callback != null) {
callback.invoke(debugResult(PluginResult.ok(connected, DEBUG_STATE.getCurrentDeviceId(), DEBUG_STATE.getCurrentDeviceName(), "isConnected:ok")).toJsonString());
}
}
@JSMethod(uiThread = false)
public void getDebugInfo(JSCallback callback) {
boolean connected;
synchronized (LOCK) {
connected = BLUETOOTH_TRANSPORT.isConnected();
}
if (callback != null) {
callback.invoke(debugResult(PluginResult.ok(connected, DEBUG_STATE.getCurrentDeviceId(), DEBUG_STATE.getCurrentDeviceName(), "debug:ok")).toJsonString());
}
}
@JSMethod(uiThread = false)
public void printTemplate(JSONObject params, JSCallback callback) {
String deviceId = SafeJson.getString(params, "deviceId", "");
String deviceName = SafeJson.getString(params, "deviceName", "");
String templateJson = SafeJson.getString(params, "templateJson", "");
String dataJson = SafeJson.getString(params, "dataJson", "{}");
int dpi = SafeJson.getInt(params, "dpi", 203);
int printQty = Math.max(1, SafeJson.getInt(params, "printQty", 1));
if (templateJson == null || templateJson.trim().isEmpty()) {
if (callback != null) {
callback.invoke(errorResult(9011006, "Template json is empty.").toJsonString());
}
return;
}
PluginResult connectResult = ensureConnected(deviceId, deviceName);
if (!connectResult.success) {
if (callback != null) callback.invoke(connectResult.toJsonString());
return;
}
DEBUG_STATE.setStage("printTemplate:queued");
if (callback != null) {
callback.invoke(debugResult(PluginResult.ok(true, DEBUG_STATE.getCurrentDeviceId(), DEBUG_STATE.getCurrentDeviceName(), "printTemplate:queued")).toJsonString());
}
PRINT_EXECUTOR.execute(new Runnable() {
@Override
public void run() {
try {
DEBUG_STATE.resetBuildMetrics();
DEBUG_STATE.setStage("build-command");
long buildStarted = System.currentTimeMillis();
NativeTemplateCommandBuilder.BuildResult buildResult =
NativeTemplateCommandBuilder.buildWithStats(templateJson, dataJson, dpi, printQty);
DEBUG_STATE.setBuildMs(Math.max(0L, System.currentTimeMillis() - buildStarted));
DEBUG_STATE.setBuildResult(buildResult);
long writeStarted = System.currentTimeMillis();
synchronized (LOCK) {
if (!BLUETOOTH_TRANSPORT.isConnected()) {
errorResult(9011005, "Bluetooth printer transport is not ready.");
return;
}
DEBUG_STATE.setStage("write-command");
boolean ok = BLUETOOTH_TRANSPORT.write(buildResult.bytes);
if (!ok) {
errorResult(9011011, "Printer writeDataImmediately returned false.");
return;
}
}
DEBUG_STATE.setWriteMs(Math.max(0L, System.currentTimeMillis() - writeStarted));
DEBUG_STATE.markPrinted(System.currentTimeMillis());
DEBUG_STATE.setStage("printTemplate:ok");
DEBUG_STATE.clearError();
} catch (Throwable e) {
DEBUG_STATE.setError(ThrowableUtils.unwrap(e));
DEBUG_STATE.setStage("printTemplate:error");
}
}
});
}
/**
* 将 JS 侧已生成的 TSC/指令字节（Base64）经佳博 SDK 写出。
* 用于整页光栅等路径，避免再走 JS 经典蓝牙 socket（慢、易超时）。
*/
@JSMethod(uiThread = false)
public void printCommandBytes(JSONObject params, JSCallback callback) {
String deviceId = SafeJson.getString(params, "deviceId", "");
String deviceName = SafeJson.getString(params, "deviceName", "");
String base64 = SafeJson.getString(params, "base64", "");
if (base64 == null || base64.trim().isEmpty()) {
if (callback != null) {
callback.invoke(errorResult(9011012, "base64 is empty.").toJsonString());
}
return;
}
PluginResult connectResult = ensureConnected(deviceId, deviceName);
if (!connectResult.success) {
if (callback != null) {
callback.invoke(connectResult.toJsonString());
}
return;
}
DEBUG_STATE.setStage("printCommandBytes:queued");
if (callback != null) {
callback.invoke(debugResult(PluginResult.ok(true, DEBUG_STATE.getCurrentDeviceId(), DEBUG_STATE.getCurrentDeviceName(), "printCommandBytes:queued")).toJsonString());
}
PRINT_EXECUTOR.execute(new Runnable() {
@Override
public void run() {
try {
byte[] bytes = Base64.decode(base64, Base64.DEFAULT);
if (bytes == null || bytes.length == 0) {
DEBUG_STATE.setError("decoded bytes empty");
DEBUG_STATE.setStage("printCommandBytes:error");
return;
}
long writeStarted = System.currentTimeMillis();
synchronized (LOCK) {
if (!BLUETOOTH_TRANSPORT.isConnected()) {
errorResult(9011005, "Bluetooth printer transport is not ready.");
return;
}
DEBUG_STATE.setStage("write-raw-command");
boolean ok = BLUETOOTH_TRANSPORT.write(bytes);
if (!ok) {
errorResult(9011011, "Printer writeDataImmediately returned false.");
return;
}
}
DEBUG_STATE.setWriteMs(Math.max(0L, System.currentTimeMillis() - writeStarted));
DEBUG_STATE.markPrinted(System.currentTimeMillis());
DEBUG_STATE.setStage("printCommandBytes:ok");
DEBUG_STATE.clearError();
} catch (Throwable e) {
DEBUG_STATE.setError(ThrowableUtils.unwrap(e));
DEBUG_STATE.setStage("printCommandBytes:error");
}
}
});
}
private PluginResult ensureConnected(String deviceId, String deviceName) {
synchronized (LOCK) {
PluginResult result = BLUETOOTH_TRANSPORT.ensureConnected(deviceId, deviceName, DEBUG_STATE);
if (!result.success) {
return debugResult(result);
}
return debugResult(PluginResult.ok(true, DEBUG_STATE.getCurrentDeviceId(), DEBUG_STATE.getCurrentDeviceName(), "connect:ok"));
}
}
private static PluginResult errorResult(int code, String message) {
DEBUG_STATE.setError(message == null ? "" : message);
return debugResult(PluginResult.error(code, message));
}
private static PluginResult debugResult(PluginResult result) {
return DEBUG_STATE.attachTo(result);
}
}