BirdsProject/app/src/main/java/com/juhabi/birds/login/LoginActivity.kt

package com.juhabi.birds.login

import android.content.Intent
import android.os.Bundle
import android.os.CountDownTimer
import android.text.InputType
import android.view.LayoutInflater
import android.view.View
import com.gyf.immersionbar.ImmersionBar
import com.juhabi.birds.AppConfig
import com.juhabi.birds.R
import com.juhabi.birds.base.BaseActivity
import com.juhabi.birds.databinding.ActivityLoginBinding
import com.juhabi.birds.login.model.UserEntity
import com.juhabi.birds.login.mvp.LoginContract
import com.juhabi.birds.login.mvp.LoginImpl
import com.juhabi.birds.login.mvp.LoginPresenter
import com.juhabi.birds.main.MainActivity
import com.juhabi.birds.mine.MineCenterActivity
import com.juhabi.birds.network.TokenManager
import com.juhabi.birds.util.SharedPreferencesUtil
import com.juhabi.birds.util.ToastUtil

/**
 * 登录
 */
class LoginActivity : BaseActivity<ActivityLoginBinding, LoginPresenter>(),
    LoginContract.LoginView, View.OnClickListener {

    /** 是否使用密码登录；false 为手机号 + 验证码登录 */
    private var loginByPassword = true
    private var isPasswordVisible = false
    private var codeCountDownTimer: CountDownTimer? = null

    override fun createBinding(inflater: LayoutInflater): ActivityLoginBinding {
        return ActivityLoginBinding.inflate(inflater)
    }

    override fun createPresenter(): LoginPresenter {
        return LoginPresenter(LoginImpl())
    }

    override fun initWindows() {
        ImmersionBar.with(this)
            .navigationBarColor(R.color.color_zhu)
            .navigationBarDarkIcon(true)
            .init()
    }

    override fun initView(savedInstanceState: Bundle?) {
        listOf(
            binding.tvChangeCode,
            binding.forgotPasswordButton,
            binding.passwordVisibilityButton,
            binding.getCodeButton,
            binding.loginButton,
            binding.registerButton,
        ).forEach { button ->
            button.setOnClickListener(this)
        }
    }

    override fun onClick(view: View) {
        when (view.id) {
            R.id.tvChangeCode -> {//更换登录方式
                if (loginByPassword) {
                    binding.linearCode.visibility = View.VISIBLE
                    binding.linearPsd.visibility = View.GONE
                    loginByPassword = false
                    binding.tvChangeCode.setText(R.string.register_change_psd_login)
                } else {
                    binding.linearCode.visibility = View.GONE
                    binding.linearPsd.visibility = View.VISIBLE
                    loginByPassword = true
                    binding.tvChangeCode.setText(R.string.register_change_code_login)
                }
            }

            R.id.getCodeButton -> {//获取验证码
                val phone = binding.accountEditText.text.toString().trim()
                if (phone.isBlank()) {
                    ToastUtil.showShort(mContext, "手机号不能为空")
                    return
                }
                presenter?.getPhoneSmsCode(phone, AppConfig.SEND_CODE_SCENE_LOGIN)
            }

            R.id.registerButton -> {//注册
                goTo(RegisterActivity::class.java, null)
            }

            R.id.forgotPasswordButton -> {//忘记密码
                goTo(ForgetPsdActivity::class.java, null)
            }

            R.id.passwordVisibilityButton -> {
                togglePasswordVisibility()
            }

            R.id.loginButton -> {//登录
                val account = binding.accountEditText.text.toString().trim()
                if (account.isBlank()) {
                    ToastUtil.showShort(mContext, "账号不能为空")
                    return
                }

                if (loginByPassword) {
                    val password = binding.passwordEditText.text.toString()
                    if (password.isBlank()) {
                        ToastUtil.showShort(mContext, "密码不能为空")
                        return
                    }
                    presenter?.loginByPhonePsd(account, password)
                } else {
                    val code = binding.codeEditText.text.toString().trim()
                    if (code.isBlank()) {
                        ToastUtil.showShort(mContext, "验证码不能为空")
                        return
                    }
                    presenter?.loginByPhoneSms(account, code)
                }
            }
        }
    }

    private fun togglePasswordVisibility() {
        isPasswordVisible = !isPasswordVisible
        val selection = binding.passwordEditText.selectionEnd
        binding.passwordEditText.inputType = if (isPasswordVisible) {
            InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
        } else {
            InputType.TYPE_CLASS_TEXT or InputType.TYPE_TEXT_VARIATION_PASSWORD
        }
        // 保持光标位置，并触发 typeface 刷新
        binding.passwordEditText.setSelection(selection.coerceAtLeast(0))
        binding.passwordEditText.typeface = binding.accountEditText.typeface
    }

    override fun sendCodeSuccess(message: String) {
        hideLoading()
        ToastUtil.showShort(mContext, message)
        codeCountDownTimer?.cancel()
        binding.getCodeButton.apply {
            isEnabled = false
            isClickable = false
            setBackgroundResource(R.drawable.shape_register_code_disabled_bg)
            text = getString(R.string.register_code_countdown, CODE_COUNTDOWN_SECONDS)
        }
        codeCountDownTimer = object : CountDownTimer(CODE_COUNTDOWN_MILLIS, 1_000L) {
            override fun onTick(millisUntilFinished: Long) {
                val secondsRemaining = (millisUntilFinished + 999L) / 1_000L
                binding.getCodeButton.text = getString(
                    R.string.register_code_countdown,
                    secondsRemaining
                )
            }

            override fun onFinish() {
                codeCountDownTimer = null
                binding.getCodeButton.apply {
                    isEnabled = true
                    isClickable = true
                    setBackgroundResource(R.drawable.shape_register_code_bg)
                    setText(R.string.register_get_code)
                }
            }
        }.start()
    }

    override fun onRegisterSuccess(message: String) {
    }

    override fun onForgetPsdSuccess(message: String) {
    }

    override fun showUsernameError(message: String) {
        ToastUtil.showShort(mContext, message)
    }

    override fun showPasswordError(message: String) {
        ToastUtil.showShort(mContext, message)
    }

    override fun clearInputErrors() {
    }

    override fun onLoginSuccess(user: UserEntity) {
        val token = user.token.trim()
        // SharedPreferences 持久化 token，并同步到内存 AppConfig.userToken
        TokenManager.save(this, token)
        AppConfig.USER_LOGIN = token.isNotBlank()
        SharedPreferencesUtil.putBoolean(this, KEY_USER_LOGIN, AppConfig.USER_LOGIN)

        ToastUtil.showShort(mContext, "登录成功")
        startActivity(Intent(this, MainActivity::class.java))
        finish()
    }

    override fun showError(message: String) {
        hideLoading()
        ToastUtil.showShort(mContext, message)
    }

    override fun onDestroy() {
        codeCountDownTimer?.cancel()
        codeCountDownTimer = null
        super.onDestroy()
    }

    private companion object {
        const val CODE_COUNTDOWN_SECONDS = 60L
        const val CODE_COUNTDOWN_MILLIS = CODE_COUNTDOWN_SECONDS * 1_000L
        const val KEY_USER_LOGIN = "user_login"
    }
}