import { Ionicons } from "@expo/vector-icons";
import { useLocalSearchParams, useRouter } from "expo-router";
import { useEffect, useState } from 'react';
import { useTranslation } from "react-i18next";
import { ActivityIndicator, TextInput, TouchableOpacity, View } from 'react-native';
import { useAuth } from "../../contexts/auth-context";
import { fetchApi } from "../../lib/server-api-util";
import { User } from "../../types/user";
import { ThemedText } from "../ThemedText";

interface LoginProps {
    updateUrlParam: (status: string, value: string) => void;
    setError: (error: string) => void;
    setShowPassword: (showPassword: boolean) => void;
    showPassword: boolean;
}

const SignUp = ({ updateUrlParam, setError, setShowPassword, showPassword }: LoginProps) => {
    const { t } = useTranslation();
    const { login } = useAuth();
    const router = useRouter();
    const [email, setEmail] = useState('');
    const [password, setPassword] = useState('');
    const [confirmPassword, setConfirmPassword] = useState('');
    const [passwordsMatch, setPasswordsMatch] = useState(true);
    const [loading, setLoading] = useState(false);
    const [checked, setChecked] = useState(false);

    // 从 URL 参数中获取 task_id 和 steps
    const params = useLocalSearchParams<{ task_id?: string; steps?: string }>();
    const taskId = params.task_id;
    const steps = params.steps;

    const handlePasswordChange = (value: string) => {
        setPassword(value);
        // 当密码或确认密码变化时，检查是否匹配
        if (confirmPassword && value !== confirmPassword) {
            setPasswordsMatch(false);
        } else {
            setPasswordsMatch(true);
        }
    };

    const handleConfirmPasswordChange = (value: string) => {
        setConfirmPassword(value);
        // 当密码或确认密码变化时，检查是否匹配
        if (password && value !== password) {
            setPasswordsMatch(false);
        } else {
            setPasswordsMatch(true);
        }
    };

    const handleSubmit = async () => {
        if (!email) {
            setError(t('auth.signup.emailPlaceholder', { ns: 'login' }));
            return;
        }
        if (!password) {
            setError(t('auth.signup.passwordPlaceholder', { ns: 'login' }));
            return;
        }
        // 验证两次密码是否一致
        if (password !== confirmPassword) {
            setPasswordsMatch(false);
            setError(t('auth.signup.passwordNotMatch', { ns: 'login' }));
            return;
        }
        if (!checked) {
            setError(t('auth.signup.checkedRequired', { ns: 'login' }));
            return;
        }

        if (email) {
            // 校验是否符合邮箱规范
            const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
            if (!emailRegex.test(email)) {
                setError(t('auth.signup.emailAuth', { ns: 'login' }));
                return;
            }
        }
        if (password) {
            // 校验密码是否符合规范
            const passwordRegex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/;
            if (!passwordRegex.test(password)) {
                setError(t('auth.signup.passwordAuth', { ns: 'login' }));
                return;
            }
        }

        setLoading(true);

        try {
            const body = {
                email: email,
                password: password
            };

            // 这里调用实际的注册API
            const response = await fetchApi<User>('/iam/register/email', {
                method: 'POST',
                body: JSON.stringify(body),
                headers: {
                    'Content-Type': 'application/json'
                }
            }, true, false);

            // 存储token
            login(response as User, response.access_token || '');

            // 如果有任务ID，跳转到上传页面
            if (taskId) {
                // 使用字符串路径格式传递参数
                // router.push(`/upload?steps=${encodeURIComponent(steps || '')}&task_id=${encodeURIComponent(taskId)}`);
            } else {
                // 注册成功后跳转到首页
                router.replace('/user-message');
            }
            setLoading(false);
        } catch (error) {
            // console.error('Registration failed:', error);
            // 这里可以添加错误处理逻辑
            setLoading(false);
        }
    };

    useEffect(() => {
        if (!passwordsMatch) {
            setError(t('auth.login.passwordNotMatch', { ns: 'login' }));
        }
    }, [passwordsMatch])
    // 初始化
    useEffect(() => {
        setShowPassword(false)
    }, [])

    return <View className="w-full">
        {/* 邮箱输入 */}
        <View className="mb-4">
            <ThemedText className="text-base !text-textPrimary mb-2 ml-2">
                {t('auth.login.email', { ns: 'login' })}
            </ThemedText>
            <View className="border border-gray-300 rounded-2xl bg-inputBackground overflow-hidden">
                <TextInput
                    className="p-3 text-base flex-1"
                    placeholder={t('auth.login.accountPlaceholder', { ns: 'login' })}
                    placeholderTextColor="#ccc"
                    value={email}
                    onChangeText={(value) => {
                        setEmail(value)
                        setError('123')
                    }}
                    keyboardType="email-address"
                    autoCapitalize="none"
                />
            </View>
        </View>

        {/* 密码输入 */}
        <View className="mb-4">
            <ThemedText className="text-base !text-textPrimary mb-2 ml-2">
                {t('auth.login.password', { ns: 'login' })}
            </ThemedText>
            <View className="border border-gray-300 rounded-2xl bg-inputBackground overflow-hidden flex-row items-center">
                <TextInput
                    className="p-3 text-base flex-1"
                    placeholder={t('auth.login.passwordPlaceholder', { ns: 'login' })}
                    placeholderTextColor="#ccc"
                    value={password}
                    onChangeText={(value) => {
                        handlePasswordChange(value)
                        setError('123')
                    }}
                    secureTextEntry={!showPassword}
                />
                <TouchableOpacity
                    onPress={() => setShowPassword(!showPassword)}
                    className="px-3 py-2"
                >
                    <Ionicons
                        name={showPassword ? 'eye' : 'eye-off'}
                        size={20}
                        color="#666"
                    />
                </TouchableOpacity>
            </View>
        </View>

        {/* 确认密码 */}
        <View className="mb-6">
            <ThemedText className="text-base !text-textPrimary mb-2 ml-2">
                {t('auth.signup.confirmPassword', { ns: 'login' })}
            </ThemedText>
            <View className="border border-gray-300 rounded-2xl bg-inputBackground overflow-hidden flex-row items-center">
                <TextInput
                    className="p-3 text-base flex-1"
                    placeholder={t('auth.signup.confirmPasswordPlaceholder', { ns: 'login' })}
                    placeholderTextColor="#ccc"
                    value={confirmPassword}
                    onChangeText={(value) => {
                        handleConfirmPasswordChange(value)
                        setError('123')
                    }}
                    secureTextEntry={!showPassword}
                />
                <TouchableOpacity
                    onPress={() => setShowPassword(!showPassword)}
                    className="px-3 py-2"
                >
                    <Ionicons
                        name={showPassword ? 'eye' : 'eye-off'}
                        size={20}
                        color="#666"
                    />
                </TouchableOpacity>
            </View>
        </View>

        {/* 注册按钮 */}
        <TouchableOpacity
            className={`w-full bg-[#E2793F] rounded-full p-4 items-center ${loading ? 'opacity-70' : ''}`}
            onPress={handleSubmit}
            disabled={loading}
        >
            {loading ? (
                <ActivityIndicator color="#fff" />
            ) : (
                <ThemedText className="!text-white font-semibold">
                    {t("auth.signup.signupButton", { ns: 'login' })}
                </ThemedText>
            )}
        </TouchableOpacity>
        <View style={{ flexDirection: 'row', alignItems: 'center', marginVertical: 10 }}>
            <TouchableOpacity
                onPress={() => {
                    const newValue = !checked;
                    setChecked(newValue);
                    if (!newValue) {
                        setError(t('auth.signup.checkedRequired', { ns: 'login' }));
                        return
                    } else {
                        setError("123")
                    }

                }}
                style={{
                    width: 20,
                    height: 20,
                    borderRadius: 10,
                    borderWidth: 2,
                    borderColor: checked ? '#E2793F' : '#ccc',
                    backgroundColor: checked ? '#E2793F' : 'transparent',
                    justifyContent: 'center',
                    alignItems: 'center',
                    marginRight: 8,
                }}
            >
                {checked && (
                    <Ionicons name="checkmark" size={14} color="white" />
                )}
            </TouchableOpacity>
            <View style={{ flexDirection: 'row', flexWrap: 'wrap', flex: 1 }}>
                <ThemedText className="text-sm !text-textPrimary">
                    {t("auth.telLogin.agree", { ns: 'login' })}
                </ThemedText>
                <TouchableOpacity onPress={() => router.push({
                    pathname: '/agreement',
                    params: { type: 'service' }
                } as any)}>
                    <ThemedText className="text-sm !text-[#E2793F]">
                        {t("auth.telLogin.terms", { ns: 'login' })}
                    </ThemedText>
                </TouchableOpacity>
                <ThemedText className="text-sm !text-textPrimary">
                    {t("auth.telLogin.and", { ns: 'login' })}
                </ThemedText>
                <TouchableOpacity onPress={() => router.push({
                    pathname: '/agreement',
                    params: { type: 'privacy' }
                } as any)}>
                    <ThemedText className="text-sm !text-[#E2793F]">
                        {t("auth.telLogin.privacyPolicy", { ns: 'login' })}
                    </ThemedText>
                </TouchableOpacity>
                <ThemedText className="text-sm !text-textPrimary">
                    {t("auth.telLogin.and", { ns: 'login' })}
                </ThemedText>
                <TouchableOpacity onPress={() => router.push({
                    pathname: '/agreement',
                    params: { type: 'user' }
                } as any)}>
                    <ThemedText className="text-sm !text-[#E2793F]">
                        {t("auth.telLogin.userAgreement", { ns: 'login' })}
                    </ThemedText>
                </TouchableOpacity>
                <ThemedText className="text-sm !text-textPrimary">
                    {t("auth.telLogin.agreement", { ns: 'login' })}
                </ThemedText>
                <ThemedText className="text-sm !text-[#E2793F]">
                    {t("common.name")}
                </ThemedText>
                <ThemedText className="text-sm !text-textPrimary">
                    {t("auth.telLogin.getPhone", { ns: 'login' })}
                </ThemedText>
            </View>
        </View>
        {/* 已有账号 */}
        <View className="flex-row justify-center mt-6">
            <ThemedText className="text-sm !text-textPrimary">
                {t("auth.signup.haveAccount", { ns: 'login' })}
            </ThemedText>
            <TouchableOpacity
                onPress={() => {
                    updateUrlParam("status", "login");
                }}
            >
                <ThemedText className="!text-[#E2793F] text-sm font-semibold ml-1">
                    {t("auth.signup.login", { ns: 'login' })}
                </ThemedText>
            </TouchableOpacity>
        </View>
    </View>
}

export default SignUp