import { BlurView } from "expo-blur";
import type { ReactNode } from "react";
import { Platform, StyleSheet, View, type StyleProp, type ViewStyle } from "react-native";

import { useAppTheme } from "@/contexts/ThemeContext";
import { blurIntensity, radius, shadowMd, shadowSm } from "@/lib/beenvoice-theme";

type GlassSurfaceProps = {
  children: ReactNode;
  style?: StyleProp<ViewStyle>;
  radius?: number;
  variant?: "card" | "stat";
};

export function GlassSurface({
  children,
  style,
  radius: cornerRadius = radius.lg,
  variant = "card",
}: GlassSurfaceProps) {
  const { colors, isDark } = useAppTheme();
  const flat = StyleSheet.flatten(style);
  const isStat = variant === "stat";

  return (
    <View
      style={[
        styles.shell,
        isStat ? styles.statShell : null,
        { borderRadius: cornerRadius, borderColor: colors.borderGlass },
        isStat ? shadowMd : shadowSm,
        flat,
        Platform.OS === "android" ? { backgroundColor: colors.cardGlass } : null,
      ]}
    >
      {Platform.OS === "ios" ? (
        <BlurView
          intensity={blurIntensity.card}
          tint={isDark ? "dark" : "light"}
          style={[StyleSheet.absoluteFill, { borderRadius: cornerRadius }]}
        />
      ) : null}
      <View
        pointerEvents="none"
        style={[
          styles.fill,
          { backgroundColor: colors.cardGlass, borderRadius: cornerRadius },
        ]}
      />
      <View style={styles.content}>{children}</View>
    </View>
  );
}

export function GlassChrome({
  children,
  style,
  radius: cornerRadius = 0,
}: {
  children?: ReactNode;
  style?: StyleProp<ViewStyle>;
  radius?: number;
}) {
  const { colors, isDark } = useAppTheme();

  return (
    <View
      style={[
        styles.chromeShell,
        { borderRadius: cornerRadius, backgroundColor: colors.cardGlass },
        StyleSheet.flatten(style),
      ]}
    >
      {Platform.OS === "ios" ? (
        <BlurView
          intensity={blurIntensity.chrome}
          tint={isDark ? "dark" : "light"}
          style={[StyleSheet.absoluteFill, { borderRadius: cornerRadius }]}
        />
      ) : null}
      <View
        pointerEvents="none"
        style={[
          styles.fill,
          { backgroundColor: colors.cardGlass, borderRadius: cornerRadius },
        ]}
      />
      {children ? <View style={styles.content}>{children}</View> : null}
    </View>
  );
}

const styles = StyleSheet.create({
  shell: {
    overflow: "hidden",
    borderWidth: StyleSheet.hairlineWidth * 2,
    backgroundColor: "transparent",
  },
  statShell: {
    borderWidth: 0,
  },
  chromeShell: {
    overflow: "hidden",
  },
  fill: {
    ...StyleSheet.absoluteFill,
  },
  content: {
    position: "relative",
    zIndex: 2,
  },
});