package com.example.blogtitles;

import androidx.appcompat.app.AppCompatActivity;

import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.google.gson.Gson;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {

    private static final String API_URL = "https://admin.meiyi.site/api/v1/blogs";
    private ListView blogListView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        blogListView = findViewById(R.id.blogListView);

        // 执行异步任务来获取博客列表
        new FetchBlogsTask().execute();
    }

    private class FetchBlogsTask extends AsyncTask<Void, Void, List<Blog>> {

        @Override
        protected List<Blog> doInBackground(Void... voids) {
            OkHttpClient client = new OkHttpClient();
            Request request = new Request.Builder()
                    .url(API_URL)
                    .build();

            try {
                Response response = client.newCall(request).execute();
                String jsonData = response.body().string();
                return parseJsonData(jsonData);
            } catch (IOException e) {
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(List<Blog> blogs) {
            if (blogs != null) {
                // 创建适配器
                BlogTitleAdapter adapter = new BlogTitleAdapter(MainActivity.this, blogs);
                // 设置适配器
                blogListView.setAdapter(adapter);
            }
        }
    }

    private List<Blog> parseJsonData(String jsonData) {
        List<Blog> blogs = new ArrayList<>();

        try {
            JSONObject json = new JSONObject(jsonData);
            JSONArray jsonArray = json.getJSONArray("blogs");
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject = jsonArray.getJSONObject(i);
                String title = jsonObject.getString("title");
                // 如果有content字段，解析content
                String content = jsonObject.optString("content", "");

                Blog blog = new Blog(title, content);
                blogs.add(blog);
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return blogs;
    }

    private class Blog {
        private String title;
        private String content;

        public Blog(String title, String content) {
            this.title = title;
            this.content = content;
        }

        public String getTitle() {
            return title;
        }

        public String getContent() {
            return content;
        }
    }

    private class BlogTitleAdapter extends ArrayAdapter<Blog> {

        public BlogTitleAdapter(MainActivity context, List<Blog> blogs) {
            super(context, 0, blogs);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if (convertView == null) {
                convertView = LayoutInflater.from(getContext()).inflate(android.R.layout.simple_list_item_1, parent, false);
            }

            Blog blog = getItem(position);

            TextView titleTextView = convertView.findViewById(android.R.id.text1);
            titleTextView.setText(blog.getTitle());

            return convertView;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/blogListView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.blogtitles">
    <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.BlogTitles"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

plugins {
    id 'com.android.application'
}

android {
    compileSdk 32

    defaultConfig {
        applicationId "com.example.blogtitles"
        minSdk 21
        targetSdk 32
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    // 网络请求库
    implementation 'com.squareup.okhttp3:okhttp:4.9.1'

    // JSON解析库
    implementation 'com.google.code.gson:gson:2.8.8'
    implementation 'androidx.appcompat:appcompat:1.3.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}