import { Ionicons } from "@expo/vector-icons";
import { View, type StyleProp, type ViewStyle } from "react-native";
import { Text } from "@/components/ui/Text";
import { colors, radii } from "@/lib/theme";

type Tone = "brand" | "danger" | "warn" | "info" | "neutral" | "dark";

const tones: Record<Tone, { bg: string; fg: string }> = {
  brand: { bg: colors.brandSoft, fg: colors.brandText },
  danger: { bg: colors.dangerSoft, fg: colors.danger },
  warn: { bg: colors.warnSoft, fg: colors.warn },
  info: { bg: colors.infoSoft, fg: colors.info },
  neutral: { bg: colors.surfaceAlt, fg: colors.muted },
  dark: { bg: colors.ink, fg: colors.surface },
};

export function Badge({
  label,
  tone = "brand",
  icon,
  solid,
  style,
}: {
  label: string;
  tone?: Tone;
  icon?: keyof typeof Ionicons.glyphMap;
  /** Filled lime treatment used for discount flags on imagery. */
  solid?: boolean;
  style?: StyleProp<ViewStyle>;
}) {
  const skin = tones[tone];
  const bg = solid ? colors.brand : skin.bg;
  const fg = solid ? colors.ink : skin.fg;

  return (
    <View
      style={[
        {
          flexDirection: "row",
          alignItems: "center",
          gap: 4,
          alignSelf: "flex-start",
          backgroundColor: bg,
          paddingHorizontal: 8,
          paddingVertical: 4,
          borderRadius: radii.xs,
        },
        style,
      ]}
    >
      {icon ? <Ionicons name={icon} size={11} color={fg} /> : null}
      <Text variant="micro" color={fg}>
        {label}
      </Text>
    </View>
  );
}

export function StockLabel({
  inStock,
  count,
}: {
  inStock: boolean;
  count?: number;
}) {
  return (
    <Text variant="micro" color={inStock ? colors.inStock : colors.outOfStock}>
      {inStock ? `In stock${count ? ` (${count})` : ""}` : "Out of stock"}
    </Text>
  );
}

export function Rating({
  value,
  count,
  showStars = true,
  size = 13,
}: {
  value: number;
  count?: number;
  showStars?: boolean;
  size?: number;
}) {
  return (
    <View style={{ flexDirection: "row", alignItems: "center", gap: 4 }}>
      {showStars ? (
        <View style={{ flexDirection: "row", gap: 1 }}>
          {[1, 2, 3, 4, 5].map((i) => (
            <Ionicons
              key={i}
              name={
                value >= i ? "star" : value >= i - 0.5 ? "star-half" : "star-outline"
              }
              size={size}
              color={value >= i - 0.5 ? colors.star : colors.disabled}
            />
          ))}
        </View>
      ) : (
        <Ionicons name="star" size={size} color={colors.star} />
      )}
      <Text variant="micro" color={colors.muted}>
        {value.toFixed(1)}
        {count !== undefined ? ` (${count})` : ""}
      </Text>
    </View>
  );
}

/** Compact price with optional struck-through original. */
export function Price({
  value,
  compareAt,
  size = "md",
  format,
}: {
  value: number;
  compareAt?: number;
  size?: "sm" | "md" | "lg";
  format: (n: number) => string;
}) {
  return (
    <View style={{ flexDirection: "row", alignItems: "baseline", gap: 6 }}>
      <Text variant={size === "lg" ? "priceLg" : size === "sm" ? "label" : "price"}>
        {format(value)}
      </Text>
      {compareAt && compareAt > value ? (
        <Text
          variant="caption"
          color={colors.subtle}
          style={{ textDecorationLine: "line-through" }}
        >
          {format(compareAt)}
        </Text>
      ) : null}
    </View>
  );
}