import { StatusBar } from 'expo-status-bar';
import React, { useState, useEffect } from 'react';
import { View, ActivityIndicator, StyleSheet, SafeAreaView, FlatList } from 'react-native';
import API from './../API.js';
import Post from './../components/Post.js';
import { Provider as PaperProvider, DefaultTheme, } from 'react-native-paper';
import MaterialIcons from 'react-native-vector-icons/MaterialIcons';
import NewPost from "./../components/NewPost.js";

const theme = {
    ...DefaultTheme,
    roundness: 2,
    colors: {
      ...DefaultTheme.colors,
      primary: '#000000',
      accent: '#0d6efd',
      background: "#edf2f7",
    },
  };


let Feed = ({ navigation, route }) => {
    let [Me, setMeProfile] = useState({});
    let [Posts, setPosts] = useState([]);
    useEffect(async () => {
        setPosts([]);
        let r = await API.getMe();
        setMeProfile(r);
        if (route.params && route.params.profileid) {
            navigation.navigate('Profile', {profileid: route.params.profileid})
        } else {
            let posts = await API.getPosts();
            setPosts(posts);
            navigation.setOptions({ title: "Feed" });
        }
        //console.log(posts)
    }, [route.params]);
    const renderPost = (({ item }) => {
        return (<Post post={item} viewer={Me} />);
    });


    return (
        <PaperProvider settings={{
            icon: props => <MaterialIcons {...props} />,
        }} theme={theme}>
            <SafeAreaView style={styles.container}>
                <View>
                    <FlatList
                        data={Posts}
                        renderItem={renderPost}
                        keyExtractor={item => item._id || item.createdAt}
                        ListHeaderComponent={<NewPost newPostCB={(newPost) => setPosts([newPost, ...Posts])} />}
                        refreshing={Posts.length === 0}
                        onRefresh={()=>{
                            API.getPosts().then(setPosts);
                        }}
                    />
                </View>
                <StatusBar style="auto" />
            </SafeAreaView>
        </PaperProvider>
    );
}

export default Feed;

const styles = StyleSheet.create({
    container: {
        flex: 1,
        alignItems: 'center',
        backgroundColor: "#edf2f7",
    },
});