import { Text, TextField, TextFieldRef, View } from "react-native-ui-lib";
import React, { useEffect, useRef, useState } from "react";
import { GroceryCategory, GroceryFrequency, useGroceryContext } from "@/contexts/GroceryContext";
import { Dropdown } from "react-native-element-dropdown";
import CloseXIcon from "@/assets/svgs/CloseXIcon";
import {Alert, findNodeHandle, StyleSheet, UIManager} from "react-native";
import DropdownIcon from "@/assets/svgs/DropdownIcon";
import { AntDesign } from "@expo/vector-icons";
import { ProfileType, useAuthContext } from "@/contexts/AuthContext";
import { IGrocery } from "@/hooks/firebase/types/groceryData";

const defaultGroceryItem = {
    id: "",
    title: "",
    category: GroceryCategory.None,
    approved: false,
    recurring: false,
    frequency: GroceryFrequency.Never,
    bought: false,
};

const EditGroceryItem = ({
  editGrocery,
  onInputFocus,
  closeEdit
}: {
  editGrocery?: IGrocery;
  onInputFocus: (y: number) => void;
  closeEdit?: Function
}) => {
  const { fuzzyMatchGroceryCategory } = useGroceryContext();
  const inputRef = useRef<TextFieldRef>(null);
  const containerRef = useRef(null);
  const { profileData } = useAuthContext();
  const {
    updateGroceryItem,
    addGrocery,
  } = useGroceryContext();

  const [grocery, setGrocery] = useState(editGrocery ?? defaultGroceryItem);

  const handleFocus = () => {
    if (containerRef.current) {
      const handle = findNodeHandle(containerRef.current);
      if (handle) {
        UIManager.measure(
          handle,
          (
            x: number,
            y: number,
            width: number,
            height: number,
            pageX: number,
            pageY: number
          ) => {
            onInputFocus(pageY);
          }
        );
      }
    }
  };

  const groceryCategoryOptions = Object.values(GroceryCategory).map(
    (category) => ({
      label: category,
      value: category,
    })
  );

    const handleClose = () => {
        closeEdit();
    }

  const handleSubmit = () => {
        if (validateGrocery()) {
            if (grocery?.id === "") {
                addGrocery({...grocery, approved: profileData?.userType === ProfileType.PARENT || profileData?.userType === ProfileType.CAREGIVER});
            } else {
                updateGroceryItem(grocery);
            }
            setGrocery(defaultGroceryItem);
            if (closeEdit) {
                closeEdit();
            }
        } else {
            return;
        }
  }

    const validateGrocery = () => {
        if (!grocery?.title || grocery?.title === "") {
            Alert.alert('Alert', 'Title field cannot be empty');
            return false;
        } else if (grocery.title?.length < 3 || grocery.title?.length > 25) {
            Alert.alert('Alert', 'Title should be between 3 and 25 characters');
            return false;
        }

        if (!grocery?.category || grocery?.category === "") {
            Alert.alert('Alert', 'Category cannot be empty');
            return false;
        }

        return true;
    }

  useEffect(() => {
    if (inputRef.current) {
      inputRef.current.focus();
    }
  }, []);

  return (
    <View
      ref={containerRef}
      style={{
        backgroundColor: "white",
        width: "100%",
        borderRadius: 25,
        paddingHorizontal: 13,
        paddingVertical: 10,
        marginTop: 0,
      }}
    >
      <View row spread centerV>
        <TextField
          text70T
          ref={inputRef}
          onFocus={handleFocus}
          placeholder="Grocery"
          value={grocery?.title}
          onSubmitEditing={handleSubmit}
          numberOfLines={1}
          returnKeyType="done"
          onChangeText={(value) => {
            let groceryCategory = fuzzyMatchGroceryCategory(value);
            setGrocery((oldData) => ({...oldData, title: value, category: groceryCategory}));
          }}
          maxLength={25}
        />
        {(grocery?.title !== "") &&
            <View row centerV>
                {grocery.title?.length > 2 && grocery.title?.length <= 25 &&
                    <AntDesign
                        name="check"
                        size={24}
                        style={{
                            color: "green",
                            marginRight: 15,
                        }}
                        onPress={handleSubmit}
                    />
                }
              <CloseXIcon
                  onPress={() => {
                    handleClose();
                  }}
              />
            </View>
        }
      </View>
      <Dropdown
        style={{ marginTop: 15 }}
        data={groceryCategoryOptions}
        placeholder="Select grocery category"
        placeholderStyle={{
          color: "#a2a2a2",
          fontFamily: "Manrope_500Medium",
          fontSize: 13.2,
        }}
        labelField="label"
        valueField="value"
        value={grocery?.category ?? GroceryCategory.None}
        iconColor="white"
        activeColor={"#fd1775"}
        containerStyle={styles.dropdownStyle}
        itemTextStyle={styles.itemText}
        itemContainerStyle={styles.itemStyle}
        selectedTextStyle={styles.selectedText}
        renderLeftIcon={() => (
          <DropdownIcon
            style={{ marginRight: 8 }}
            color={
              grocery?.category == GroceryCategory.None
                ? "#7b7b7b"
                : "#fd1775"
            }
          />
        )}
        renderItem={(item) => {
          return (
            <View height={36.02} centerV>
              <Text style={styles.itemText}>{item.label}</Text>
            </View>
          );
        }}
        onChange={(item) => {
          setGrocery((oldData) => ({...oldData, category: item.value}));
        }}
      />
    </View>
  );
};

const styles = StyleSheet.create({
  itemText: {
    fontFamily: "Manrope_400Regular",
    fontSize: 15.42,
    paddingLeft: 15,
  },
  selectedText: {
    fontFamily: "Manrope_500Medium",
    fontSize: 13.2,
    color: "#fd1775",
  },
  dropdownStyle: { borderRadius: 6.61, height: 115.34, width: 187 },
  itemStyle: { padding: 0, margin: 0 },
});

export default EditGroceryItem;