import { Card, CardDescription, CardTitle } from "@/components/ui/card"
import { ScrollArea } from "@/components/ui/scroll-area"
import { Button } from "@/components/ui/button"
import { Skeleton } from "@/components/ui/skeleton"
import {
    Select,
    SelectContent,
    SelectGroup,
    SelectItem,
    SelectLabel,
    SelectTrigger,
    SelectValue,
} from "@/components/ui/select"
import { ArrowRight, Trash2, KeyRound, GitFork } from "lucide-react"
import { useMemo, useState, useEffect } from "react"
import { Layout } from "@/components/Layout"
import { useParams, useNavigate, Link } from "react-router-dom"
import useSWR, { mutate } from "swr"
import { cn } from "@/lib/utils"
import { rpc } from "@/containers/WalletPopup/api"
import { ss58Address } from "@polkadot-labs/hdkd-helpers"
import {
    CreateDeriveFn,
    ecdsaCreateDerive,
    ed25519CreateDerive,
    sr25519CreateDerive,
} from "@polkadot-labs/hdkd"
import React from "react"
import { Header, BottomNavBar } from "../../components"
import { useAccounts, useChain } from "../../hooks"
import { networks } from "@/constants"
import { Pencil, Copy, Check } from 'lucide-react'


import { AccountTree, DerivationWithAddress } from "@/background/keystore/types"

type Scheme = "Sr25519" | "Ed25519" | "Ecdsa"

function truncate(address: string, startChars = 10, endChars = 10): string {
    if (!address || address.length <= (startChars + endChars)) {
        return address
    }

    const start = address.slice(0, startChars)
    const end = address.slice(-endChars)

    return `${start}...${end}`
}

type DerivationCardProps = React.ComponentProps<typeof Card> & {
    derivation?: DerivationWithAddress | undefined
}

type AccountCardProps = React.ComponentProps<typeof Card> & {
    accountTree?: AccountTree | undefined
}

const DerivationCard: React.FC<DerivationCardProps> = ({ derivation }) => {
    const [copied, setCopied] = useState<boolean>(false)

    const handleCopy = async (e: React.MouseEvent) => {
        e.stopPropagation()
        if (copied || !derivation) return

        await navigator.clipboard.writeText(derivation.address)
        setCopied(true)
        setTimeout(() => setCopied(false), 2000)
    }

    return (
        <Card
            key={derivation?.address || ""}
            className="p-3 pb-1 border-none rounded-lg text-card-foreground transition-all relative shadow-sm bg-card cursor-pointer"
        >
            <CardTitle className="font-semibold text-sm tracking-wide text-white/90">
                {`${derivation?.path ?? ""} ● ${derivation?.name ?? ""}`}
            </CardTitle>
            <CardDescription
                className={cn(
                    "h-[20px] text-[11px] flex items-center justify-start gap-2 font-mono",
                    copied
                        ? "text-primary cursor-default"
                        : "text-white/60 cursor-pointer"
                )}
                onClick={(e) => handleCopy(e)}
            >
                <span>{copied
                    ? "Address copied to clipboard"
                    : truncate(derivation?.address ?? "")
                }</span>

                <Button
                    variant="ghost"
                    size="icon"
                    className={cn(
                        "border-none hover:bg-transparent h-6 w-6 shrink-0",
                        copied ? "text-primary" : "text-white/60"
                    )}
                >
                    {copied ? (
                        <Check className="w-3 h-3" />
                    ) : (
                        <Copy className="w-3 h-3" />
                    )}
                </Button>
            </CardDescription>
        </Card>
    )
}

const AccountCard: React.FC<AccountCardProps> = ({ accountTree }) => {
    const [copied, setCopied] = useState<boolean>(false)

    const handleCopy = async (e: React.MouseEvent) => {
        e.stopPropagation()
        if (copied || !accountTree) return

        await navigator.clipboard.writeText(accountTree.address)
        setCopied(true)
        setTimeout(() => setCopied(false), 2000)
    }

    return (
        <div className="flex flex-col space-y-2 w-full">
            <Card
                data-testid={accountTree?.name ?? ""}
                className="p-3 pb-1 border-none rounded-lg text-card-foreground transition-all shadow-md bg-card cursor-pointer"
            >
                <CardTitle className="font-bold text-sm tracking-wide text-white">
                    {accountTree?.name ?? ""}
                </CardTitle>
                <CardDescription
                    className={cn(
                        "h-[20px] text-[11px] flex items-center justify-start gap-2 font-mono",
                        copied
                            ? "text-primary cursor-default"
                            : "text-white/60 cursor-pointer"
                    )}
                    onClick={(e) => handleCopy(e)}
                >
                    <span>{copied
                        ? "Address copied to clipboard"
                        : truncate(accountTree?.address ?? "")
                    }</span>

                    <Button
                        variant="ghost"
                        size="icon"
                        className={cn(
                            "border-none hover:bg-transparent h-6 w-6 shrink-0",
                            copied ? "text-primary" : "text-white/60"
                        )}
                    >
                        {copied ? (
                            <Check className="w-3 h-3" />
                        ) : (
                            <Copy className="w-3 h-3" />
                        )}
                    </Button>
                </CardDescription>
            </Card>

            {accountTree && accountTree.derivations && (
                <div className="relative pl-6 flex flex-col space-y-2">
                    <div className="absolute left-[10px] top-0 bottom-4 w-[1px] bg-white/20" />
                    {accountTree.derivations.map((derivation, j) => {
                        return <DerivationCard key={j} derivation={derivation} />
                    })}
                </div>
            )}
        </div>
    )
}

const AccountsSkeleton: React.FC = () => {
    return new Array(4).fill(null).map((_, i) => (
        <Card
            key={`account-skeleton-card-${i}`}
            className="p-2 mb-2 transition duration-300 border-none rounded bg-background"
        >
            <div className="flex items-center justify-between">
                <div className="w-full">
                    <Skeleton className="w-5/12 h-4 mb-2" />
                    <Skeleton className="w-11/12 h-3" />
                </div>
            </div>
        </Card>
    ))
}

export const DeleteAccount = () => {
    const navigate = useNavigate()
    const { currentChain } = useChain()
    const {
        activeAccountName,
        accountTree,
        requestPassword,
        accountsStorageMutate,
        isFetchingAccountTree,
        isFetchingAccounts,
        isFetchingActiveAccounts,
    } = useAccounts()

    const { derivation } = useParams<{ derivation?: string }>()
    const derivationPath = useMemo(() => {
        return derivation ? decodeURIComponent(derivation) : undefined;
    }, [derivation])

    const isFetching = useMemo(() => {
        return isFetchingAccountTree || isFetchingAccounts || isFetchingActiveAccounts
    }, [isFetchingAccountTree, isFetchingAccounts, isFetchingActiveAccounts])

    const deleteAccount = async () => {
        await requestPassword(async (password) => {
            await rpc.client.removeAccount({
                publicKey: accountTree?.publicKey ?? "",
                path: derivationPath,
                password,
            })
        })

        await accountsStorageMutate()
        navigate("/accounts")
    }

    return (
        <Layout accountName={activeAccountName} chainValue={currentChain?.value} innerClassName="bg-muted">
            <div className="flex items-center justify-between px-6 my-4 sm:px-8">
                <h2 className="text-xl font-semibold text-white">Delete {derivationPath ? "Derivation" : "Account Tree"}</h2>
            </div>

            <ScrollArea className="px-6 mb-4 grow sm:px-8">
                <section>
                    {isFetching && <AccountsSkeleton />}
                    {!isFetching && (
                        <div className="space-y-2">
                            {derivationPath
                                ? <DerivationCard derivation={accountTree?.derivations.find(d => d.path === derivationPath)} />
                                : <AccountCard accountTree={accountTree} />
                            }
                        </div>
                    )}
                </section>
            </ScrollArea>

            <div className="flex w-full gap-x-4 mt-6 px-6 pb-6">
                <Button onClick={() => navigate(-1)} size="full" variant="secondary">Back</Button>
                <Button onClick={() => deleteAccount()} size="full" variant="primary">Delete Now</Button>
            </div>

            <BottomNavBar />
        </Layout>
    )
}