const { $, showView, showFlash } = require("./helpers");
const { state, saveState } = require("../../shared/state");
const { decryptWithPassword } = require("../../shared/vault");

let deleteWalletIndex = null;
let ctx = null;

function show(walletIdx) {
    deleteWalletIndex = walletIdx;
    const wallet = state.wallets[walletIdx];
    $("delete-wallet-name").textContent =
        wallet.name || "Wallet " + (walletIdx + 1);
    $("delete-wallet-password").value = "";
    $("delete-wallet-flash").textContent = "";
    $("delete-wallet-flash").classList.add("hidden");
    showView("delete-wallet-confirm");
}

function init(_ctx) {
    ctx = _ctx;

    $("btn-delete-wallet-back").addEventListener("click", () => {
        deleteWalletIndex = null;
        ctx.showSettingsView();
    });

    $("btn-delete-wallet-confirm").addEventListener("click", async () => {
        const pw = $("delete-wallet-password").value;
        if (!pw) {
            $("delete-wallet-flash").textContent =
                "Please enter your password.";
            $("delete-wallet-flash").classList.remove("hidden");
            return;
        }

        if (deleteWalletIndex === null) {
            $("delete-wallet-flash").textContent =
                "No wallet selected for deletion.";
            $("delete-wallet-flash").classList.remove("hidden");
            return;
        }

        const btn = $("btn-delete-wallet-confirm");
        btn.disabled = true;
        btn.classList.add("text-muted");

        const walletIdx = deleteWalletIndex;
        const wallet = state.wallets[walletIdx];

        // Verify password against the wallet's encrypted data
        try {
            await decryptWithPassword(wallet.encryptedSecret, pw);
        } catch (_e) {
            $("delete-wallet-flash").textContent = "Wrong password.";
            $("delete-wallet-flash").classList.remove("hidden");
            btn.disabled = false;
            btn.classList.remove("text-muted");
            return;
        }

        // Collect addresses to clean up from allowedSites/deniedSites
        const addresses = (wallet.addresses || []).map((a) => a.address);

        // Remove wallet
        state.wallets.splice(walletIdx, 1);

        // Clean up site permissions for deleted addresses
        for (const addr of addresses) {
            delete state.allowedSites[addr];
            delete state.deniedSites[addr];
        }

        deleteWalletIndex = null;

        if (state.wallets.length === 0) {
            // No wallets left — reset selection and show welcome
            state.selectedWallet = null;
            state.selectedAddress = null;
            state.activeAddress = null;
            await saveState();
            showView("welcome");
        } else {
            // Switch to first wallet if deleted wallet was active
            state.selectedWallet = 0;
            state.selectedAddress = 0;
            state.activeAddress =
                state.wallets[0].addresses[0]?.address || null;
            await saveState();
            ctx.renderWalletList();
            ctx.showSettingsView();
            showFlash("Wallet deleted.");
        }
    });
}

module.exports = { init, show };