import { View, Text, Image, StyleSheet, Dimensions } from "react-native";
import React, { useRef, useState } from "react";
import Page from "../../layouts/Page";
import { ai, background } from "../../assets";
import MusicLandHeader from "../../components/MusicLandHeader";
import GradientButton from "../../components/GradientButton";
import { goBack, navigate } from "../../navigation/NavigationService";
import { Routes } from "../../navigation";
import { gutters } from "../../styles";
import SwiperFlatList from "react-native-swiper-flatlist";
import ChooseGenre from "./ChooseGenre";
import CustomizeVoice from "./CustomizeVoice";
import ChooseInstruments from "./ChooseInstruments";
import ChooseRhythm from "./ChooseRhythm";
import CreatingSong from "./CreatingSong";

const { width } = Dimensions.get("window");

const ComposeSong = () => {
  const scrollRef = useRef(null);
  const [selectedIndex, setSelectedIndex] = useState(0);
  const [progress, setProgress] = useState(18);
  const [containerLayout, setContainerLayout] = useState(null);

  const onPressNext = () => {
    setSelectedIndex(selectedIndex + 1);
    setProgress(progress + 9);
    scrollRef.current.scrollToIndex({
      index: selectedIndex + 1,
      animated: true,
    });
  };

  const onPressBack = () => {
    if (selectedIndex > 0) {
      setSelectedIndex(selectedIndex - 1);
      setProgress(progress - 9);
      scrollRef.current.scrollToIndex({
        index: selectedIndex - 1,
        animated: true,
      });
    } else {
      goBack();
    }
  };

  return (
    <Page backgroundImg={background.studioBG2} headerType="NONE">
      <MusicLandHeader onPressBack={onPressBack} progress={progress} />
      <View style={{ flex: 1, paddingBottom: gutters, gap: 48 }}>
        <View
          style={{ flex: 1 }}
          onLayout={(event) => setContainerLayout(event.nativeEvent.layout)}
        >
          <SwiperFlatList
            style={{ width, left: -gutters }}
            ref={scrollRef}
            disableGesture
          >
            <View
              style={{
                width: width,
                height: containerLayout?.height,
                paddingHorizontal: gutters,
              }}
            >
              <ChooseGenre />
            </View>
            <View
              style={{
                width: width,
                height: containerLayout?.height,
                paddingHorizontal: gutters,
              }}
            >
              <CustomizeVoice />
            </View>
            <View
              style={{
                width: width,
                height: containerLayout?.height,
                paddingHorizontal: gutters,
              }}
            >
              <ChooseInstruments />
            </View>
            <View
              style={{
                width: width,
                height: containerLayout?.height,
                paddingHorizontal: gutters,
              }}
            >
              <ChooseRhythm />
            </View>
            <View
              style={{
                width: width,
                height: containerLayout?.height,
                paddingHorizontal: gutters,
              }}
            >
              <CreatingSong active={selectedIndex === 4} />
            </View>
          </SwiperFlatList>
        </View>
        {selectedIndex !== 4 && (
          <GradientButton title="Suivant" onPress={onPressNext} />
        )}
      </View>
    </Page>
  );
};

export default ComposeSong;

const styles = StyleSheet.create({
  img: {
    width: "100%",
    height: "70%",
    position: "absolute",
    bottom: -40,
    right: -30,
  },
});