import { useEffect, useState } from "react";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import {
	Select,
	SelectContent,
	SelectItem,
	SelectTrigger,
	SelectValue,
} from "@/components/ui/select";
import { ApiKeyField } from "./connect-fields";
import {
	AWS_REGION_OPTIONS,
	BEDROCK_AUTH_ACCESS_KEY,
	BEDROCK_AUTH_IAM,
	BEDROCK_AUTH_LONG_TERM_API_KEY,
	type ProviderConnectFormProps,
} from "./provider-metadata";

/**
 * Amazon Bedrock connect form. Region + auth method drive which AWS credentials
 * are collected; everything rides along in `extra.litellm_params`.
 */
export function BedrockConnectForm({ onDraftChange }: ProviderConnectFormProps) {
	const [region, setRegion] = useState("");
	const [authMethod, setAuthMethod] = useState(BEDROCK_AUTH_ACCESS_KEY);
	const [accessKeyId, setAccessKeyId] = useState("");
	const [secretAccessKey, setSecretAccessKey] = useState("");
	const [bearerToken, setBearerToken] = useState("");

	const canSubmit = (() => {
		if (!region) return false;
		if (authMethod === BEDROCK_AUTH_ACCESS_KEY) {
			return Boolean(accessKeyId && secretAccessKey);
		}
		if (authMethod === BEDROCK_AUTH_LONG_TERM_API_KEY) {
			return Boolean(bearerToken);
		}
		return true;
	})();

	useEffect(() => {
		const params: Record<string, string> = { aws_region_name: region };
		if (authMethod === BEDROCK_AUTH_ACCESS_KEY) {
			params.aws_access_key_id = accessKeyId;
			params.aws_secret_access_key = secretAccessKey;
		} else if (authMethod === BEDROCK_AUTH_LONG_TERM_API_KEY) {
			params.aws_bearer_token_bedrock = bearerToken;
		}
		onDraftChange({ base_url: null, api_key: null, extra: { litellm_params: params } }, canSubmit);
	}, [accessKeyId, authMethod, bearerToken, canSubmit, onDraftChange, region, secretAccessKey]);

	return (
		<div className="flex flex-col gap-4">
			<div className="flex flex-col gap-2">
				<Label>AWS Region</Label>
				<Select value={region || undefined} onValueChange={setRegion}>
					<SelectTrigger>
						<SelectValue placeholder="Select a region" />
					</SelectTrigger>
					<SelectContent>
						{AWS_REGION_OPTIONS.map((option) => (
							<SelectItem key={option} value={option}>
								{option}
							</SelectItem>
						))}
					</SelectContent>
				</Select>
			</div>
			<div className="flex flex-col gap-2">
				<Label>Authentication Method</Label>
				<Select value={authMethod} onValueChange={setAuthMethod}>
					<SelectTrigger>
						<SelectValue />
					</SelectTrigger>
					<SelectContent>
						<SelectItem value={BEDROCK_AUTH_IAM}>Environment IAM Role</SelectItem>
						<SelectItem value={BEDROCK_AUTH_ACCESS_KEY}>Access Key</SelectItem>
						<SelectItem value={BEDROCK_AUTH_LONG_TERM_API_KEY}>Long-term API Key</SelectItem>
					</SelectContent>
				</Select>
			</div>
			{authMethod === BEDROCK_AUTH_ACCESS_KEY ? (
				<>
					<div className="flex flex-col gap-2">
						<Label>AWS Access Key ID</Label>
						<Input
							value={accessKeyId}
							onChange={(event) => setAccessKeyId(event.target.value)}
							placeholder="Enter your AWS access key ID"
						/>
					</div>
					<ApiKeyField
						value={secretAccessKey}
						onChange={setSecretAccessKey}
						label="AWS Secret Access Key"
						placeholder="Enter your AWS secret access key"
					/>
				</>
			) : null}
			{authMethod === BEDROCK_AUTH_LONG_TERM_API_KEY ? (
				<ApiKeyField
					value={bearerToken}
					onChange={setBearerToken}
					label="Long-term API Key"
					placeholder="Your long-term API key"
				/>
			) : null}
			{authMethod === BEDROCK_AUTH_IAM ? (
				<p className="text-xs text-muted-foreground">
					SurfSense will use the IAM role attached to the environment it&apos;s running in to
					authenticate.
				</p>
			) : null}
			<p className="text-xs text-muted-foreground">
				Add Bedrock model IDs from the provider&apos;s settings after connecting.
			</p>
		</div>
	);
}