import { useTheme } from "@/hooks";
import { cancelUploads, clearUploadError } from "@/redux/photos/photos.actions";
import { formatBytes } from "@/util/uploadUtils";
import { useMemo } from "react";
import { useTranslation } from "react-i18next";
import { ScrollView, StyleSheet, View } from "react-native";
import {
  Button,
  Divider,
  Modal,
  Portal,
  ProgressBar,
  Text,
} from "react-native-paper";
import { connect } from "react-redux";
import { createStructuredSelector } from "reselect";
import {
  selectPhotos,
  selectUploadError,
  selectUploadProgress,
} from "../../redux/photos/photos.selectors";

const mapStateToProps = createStructuredSelector({
  photos: selectPhotos,
  photoUploadProgress: selectUploadProgress,
  uploadError: selectUploadError,
});
const mapDispatchToProps = (dispatch) => ({
  clearError: () => dispatch(clearUploadError()),
  cancelUploads: () => dispatch(cancelUploads()),
});

export default connect(mapStateToProps, mapDispatchToProps)(UploadProgress);

export function UploadProgress({
  photos,
  photoUploadProgress,
  uploadError,
  clearError,
  cancelUploads,
}) {
  const { t } = useTranslation();
  const theme = useTheme();

  const completion = useMemo(() => {
    const total = Object.keys(photoUploadProgress).length;
    if (total === 0) return 0;
    const completed = Object.values(photoUploadProgress).filter(
      (p) => p.progress === 100
    ).length;
    return completed / total;
  }, [photoUploadProgress]);

  const handleCancelUploads = () => {
    cancelUploads();
  };

  return (
    <Portal>
      <Modal
        visible={photos?.length > 0}
        style={styles.modalOuter} // add
        contentContainerStyle={[
          styles.modalContainer,
          { backgroundColor: theme.colors.elevation.level1 },
        ]}
      >
        <ScrollView style={styles.modalFill}>
          <Text variant="titleLarge" style={styles.title}>
            {t("general.labels.upload")}
          </Text>
          <Text variant="labelLarge">
            {`${t("general.labels.uploadprogress")} ${Math.round(
              completion * 100
            )}%`}
          </Text>
          <ProgressBar
            progress={completion}
            style={styles.progress}
            color={completion === 1 ? "green" : "blue"}
          />
          <Divider style={{ marginVertical: 12 }} />
          {Object.keys(photoUploadProgress).map((key) => (
            <View key={key} style={styles.progressItem}>
              <Text
                style={styles.progressText}
                numberOfLines={1}
                ellipsizeMode="tail"
              >
                {photoUploadProgress[key].fileName}
              </Text>
              <View style={styles.progressBarContainer}>
                <ProgressBar
                  progress={photoUploadProgress[key].progress || 0}
                  style={styles.progress}
                  color={
                    photoUploadProgress[key].progress === 1 ? "green" : "blue"
                  }
                />
                <View style={styles.speedRow}>
                  <Text>{`${formatBytes(
                    photoUploadProgress[key].loaded /
                      (((photoUploadProgress[key].endTime || new Date()) -
                        photoUploadProgress[key].startTime) /
                        1000)
                  )}/sec`}</Text>
                </View>
              </View>
            </View>
          ))}
          <Button onPress={handleCancelUploads}>
            {t("general.actions.cancel")}
          </Button>
        </ScrollView>
      </Modal>
    </Portal>
  );
}
const styles = StyleSheet.create({
  modalOuter: {
    flex: 1, // ensure outer container can grow,
    paddingHorizontal: 24,
    paddingVertical: 72,
  },
  modalContainer: {
    width: "100%",
    height: "50%", // force full area (important for iOS)
    padding: 24,
    justifyContent: "center",
    borderRadius: 24,
  },
  modalFill: {
    flex: 1,
  },
  speedRow: {
    flexDirection: "row",
    alignItems: "center",
  },
  title: {
    alignSelf: "center",
    alignItems: "center",
    marginBottom: 12,
    paddingLeft: 12,
    paddingRight: 12,
  },
  progressItem: {
    display: "flex",
    flexDirection: "row",
    alignItems: "center",
    marginBottom: 12,
    marginLeft: 12,
    marginRight: 12,
  },
  progressText: {
    flex: 1,
    flexShrink: 1,
  },
  progressBarContainer: {
    flex: 3,
    marginLeft: 12,
    marginRight: 12,
  },
});