from flask import (
    Flask,
    make_response,
    render_template,
    send_from_directory,
    send_file,
    jsonify,
    g,
    request,
)
import os
import requests
import sqlite3
from datetime import datetime
from urllib.parse import urlencode
from io import BytesIO
from xml.sax.saxutils import escape
import importlib
import dotenv
from tools import hip2, wallet_txt
from werkzeug.middleware.proxy_fix import ProxyFix

dotenv.load_dotenv()

app = Flask(__name__)
app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1, x_host=1)

DATABASE = os.getenv("DATABASE_PATH", "fireexplorer.db")
HSD_API_BASE = os.getenv("HSD_API_BASE", "https://hsd.hns.au/api/v1")
PUBLIC_BASE_URL = os.getenv("PUBLIC_BASE_URL", "").rstrip("/")
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
OG_FONT_DIR = os.path.join(BASE_DIR, "templates", "assets", "fonts")


def get_db():
    db = getattr(g, "_database", None)
    if db is None:
        db = g._database = sqlite3.connect(DATABASE)
        db.row_factory = sqlite3.Row
    return db


@app.teardown_appcontext
def close_connection(exception):
    db = getattr(g, "_database", None)
    if db is not None:
        db.close()


def init_db():
    with app.app_context():
        db = get_db()
        db.execute(
            """
            CREATE TABLE IF NOT EXISTS names (
                namehash TEXT PRIMARY KEY,
                name TEXT NOT NULL
            )
        """
        )
        db.commit()


init_db()


def find(name, path):
    for root, dirs, files in os.walk(path):
        if name in files:
            return os.path.join(root, name)


def _truncate(text: str, max_length: int) -> str:
    if len(text) <= max_length:
        return text
    return text[: max_length - 1] + "…"


def _safe_hns_value(value) -> str:
    try:
        return f"{float(value) / 1e6:,.2f} HNS"
    except Exception:
        return "Unknown"


def _format_int(value, fallback: str = "?") -> str:
    try:
        return f"{int(value):,}"
    except Exception:
        return fallback


def _ellipsize_middle(text: str, max_length: int = 48) -> str:
    if len(text) <= max_length:
        return text
    if max_length < 7:
        return _truncate(text, max_length)
    left = (max_length - 1) // 2
    right = max_length - left - 1
    return f"{text[:left]}…{text[-right:]}"


def _fetch_explorer_json(endpoint: str):
    try:
        req = requests.get(f"{HSD_API_BASE}/{endpoint}", timeout=4)
        if req.status_code == 200:
            return req.json(), None
        return None, f"HTTP {req.status_code}"
    except Exception as e:
        return None, str(e)


def _get_public_base_url() -> str:
    if PUBLIC_BASE_URL:
        return PUBLIC_BASE_URL
    forwarded_proto = request.headers.get("X-Forwarded-Proto")
    forwarded_host = request.headers.get("X-Forwarded-Host")
    if forwarded_proto and forwarded_host:
        proto = forwarded_proto.split(",")[0].strip()
        host = forwarded_host.split(",")[0].strip()
        return f"{proto}://{host}"
    return request.url_root.rstrip("/")


def _resolve_namehash(namehash: str) -> str | None:
    try:
        db = get_db()
        cur = db.execute("SELECT name FROM names WHERE namehash = ?", (namehash,))
        row = cur.fetchone()
        if row and row["name"]:
            return row["name"]
    except Exception:
        pass

    try:
        req = requests.get(f"{HSD_API_BASE}/namehash/{namehash}", timeout=3)
        if req.status_code == 200:
            name = req.json().get("result")
            if name:
                try:
                    db = get_db()
                    db.execute(
                        "INSERT OR REPLACE INTO names (namehash, name) VALUES (?, ?)",
                        (namehash, name),
                    )
                    db.commit()
                except Exception:
                    pass
                return name
    except Exception:
        pass

    return None


def _summarize_transaction(tx: dict) -> str:
    outputs = tx.get("outputs", []) if isinstance(tx, dict) else []
    inputs = tx.get("inputs", []) if isinstance(tx, dict) else []

    if not outputs:
        return "Transaction details available"

    action_counts: dict[str, int] = {}
    for output in outputs:
        covenant = output.get("covenant") or {}
        action = (covenant.get("action") or "NONE").upper()
        action_counts[action] = action_counts.get(action, 0) + 1

    finalize_count = action_counts.get("FINALIZE", 0)
    if finalize_count > 1:
        return f"Finalized {finalize_count:,} domains"

    # Covenant-aware summary for domain operations (e.g., BID)
    for output in outputs:
        covenant = output.get("covenant") or {}
        action = (covenant.get("action") or "").upper()
        if action and action != "NONE":
            value = _safe_hns_value(output.get("value"))
            items = covenant.get("items") or []
            name = None
            if items and isinstance(items[0], str):
                name = _resolve_namehash(items[0])

            if action == "BID":
                if name:
                    return f"Bid {value} on {name}"
                return f"Bid {value} on a domain"

            if name:
                return f"{action.title()}ed {name} • Value {value}"
            return f"{action.title()} covenant • Value {value}"

    # Detect coinbase transaction
    if inputs:
        prevout = inputs[0].get("prevout") or {}
        if (
            prevout.get("hash")
            == "0000000000000000000000000000000000000000000000000000000000000000"
            and prevout.get("index") == 4294967295
        ):
            reward = _safe_hns_value(sum((o.get("value") or 0) for o in outputs))
            return f"Coinbase reward {reward}"

    total_output_value = sum((o.get("value") or 0) for o in outputs)
    total_output_hns = _safe_hns_value(total_output_value)
    recipient_addresses = {
        o.get("address") for o in outputs if o.get("address") and o.get("value", 0) > 0
    }
    recipient_count = len(recipient_addresses)

    if recipient_count <= 1:
        return f"Sent {total_output_hns}"

    return f"Sent a total of {total_output_hns} to {recipient_count} addresses"


def _build_og_context(
    search_type: str | None = None, search_value: str | None = None
) -> dict:
    default_title = "Fire Explorer"
    default_description = "A hot new Handshake Blockchain Explorer"

    if not search_type or not search_value:
        return {
            "title": default_title,
            "description": default_description,
            "image_query": {"title": default_title, "subtitle": default_description},
        }

    type_labels = {
        "block": "Block",
        "header": "Header",
        "tx": "Transaction",
        "address": "Address",
        "name": "Name",
    }
    label = type_labels.get(search_type, "Search")

    fallback_title = f"{label} {search_value} | Fire Explorer"
    fallback_description = f"View Handshake {label.lower()} details for {search_value}"

    og = {
        "title": _truncate(fallback_title, 100),
        "description": _truncate(fallback_description, 200),
        "image_query": {
            "type": label,
            "value": search_value,
            "title": fallback_title,
            "subtitle": fallback_description,
        },
    }

    if search_type == "block":
        block, err = _fetch_explorer_json(f"block/{search_value}")
        if not err and block:
            tx_count = len(block.get("txs", []))
            height = block.get("height", "?")
            timestamp = block.get("time")
            time_str = (
                datetime.utcfromtimestamp(timestamp).strftime("%Y-%m-%d %H:%M UTC")
                if timestamp
                else "Unknown time"
            )
            height_fmt = _format_int(height)
            tx_count_fmt = _format_int(tx_count, "0")
            subtitle = f"Height {height_fmt} • {tx_count_fmt} txs • {time_str}"
            og["title"] = _truncate(f"Block {height_fmt} | Fire Explorer", 100)
            og["description"] = _truncate(subtitle, 200)
            og["image_query"]["subtitle"] = subtitle

    elif search_type == "header":
        header, err = _fetch_explorer_json(f"header/{search_value}")
        if not err and header:
            height = header.get("height", "?")
            bits = header.get("bits", "?")
            subtitle = f"Height {height} • Bits {bits}"
            og["title"] = _truncate(f"Header {height} | Fire Explorer", 100)
            og["description"] = _truncate(subtitle, 200)
            og["image_query"]["subtitle"] = subtitle

    elif search_type == "tx":
        tx, err = _fetch_explorer_json(f"tx/{search_value}")
        if not err and tx:
            tx_summary = _summarize_transaction(tx)
            fee = _safe_hns_value(tx.get("fee"))
            subtitle = f"{tx_summary} • Fee {fee}"
            og["title"] = _truncate("Transaction | Fire Explorer", 100)
            og["description"] = _truncate(subtitle, 200)
            og["image_query"]["subtitle"] = subtitle

    elif search_type == "address":
        txs, err = _fetch_explorer_json(f"tx/address/{search_value}")
        if not err and isinstance(txs, list):
            subtitle = f"{len(txs)} related transactions found"
            og["title"] = _truncate("Address | Fire Explorer", 100)
            og["description"] = _truncate(subtitle, 200)
            og["image_query"]["subtitle"] = subtitle

    elif search_type == "name":
        name, err = _fetch_explorer_json(f"name/{search_value}")
        if not err and name:
            info = name.get("info", name)
            state = info.get("state", "Unknown")
            owner = info.get("owner", {}).get("hash", "Unknown")
            subtitle = f"State: {state} • Owner: {_truncate(owner, 26)}"
            og["title"] = _truncate(f"Name {search_value} | Fire Explorer", 100)
            og["description"] = _truncate(subtitle, 200)
            og["image_query"]["subtitle"] = subtitle

    og["image_query"]["title"] = og["title"]
    return og


def _render_index(search_type: str | None = None, search_value: str | None = None):
    current_datetime = datetime.now().strftime("%d %b %Y %I:%M %p")
    og_context = _build_og_context(search_type, search_value)
    image_query = og_context["image_query"]
    public_base_url = _get_public_base_url()
    og_image_url = public_base_url + "/og-image.png?" + urlencode(image_query)
    og_url = public_base_url + request.full_path
    if og_url.endswith("?"):
        og_url = og_url[:-1]

    twitter_domain = request.host
    if PUBLIC_BASE_URL and "//" in PUBLIC_BASE_URL:
        twitter_domain = PUBLIC_BASE_URL.split("//", 1)[1]

    return render_template(
        "index.html",
        datetime=current_datetime,
        meta_title=og_context["title"],
        meta_description=og_context["description"],
        og_url=og_url,
        og_image=og_image_url,
        twitter_domain=twitter_domain,
    )


def _get_og_image_context() -> dict:
    title = _truncate(request.args.get("title", "Fire Explorer"), 90)
    subtitle = _truncate(
        request.args.get("subtitle", "A hot new Handshake Blockchain Explorer"),
        140,
    )
    search_type = _truncate(request.args.get("type", "Explorer"), 24)
    search_value = request.args.get("value", "")

    normalized_type = search_type.strip().lower()
    value_max_length = 44
    if normalized_type in {"transaction", "tx"}:
        value_max_length = 30

    display_value = _ellipsize_middle(search_value, value_max_length)
    if search_value.isdigit() and int(search_value) > 100:
        display_value = f"{int(search_value):,}"

    value_font_size = "30"
    if len(display_value) > 34:
        value_font_size = "26"

    is_default_card = not search_value.strip() and normalized_type in {
        "explorer",
        "search",
        "",
    }

    return {
        "title": title,
        "subtitle": subtitle,
        "search_type": search_type,
        "search_value": search_value,
        "display_value": display_value,
        "value_font_size": value_font_size,
        "is_default_card": is_default_card,
    }


def _load_og_font(size: int, bold: bool = False, mono: bool = False):
    try:
        image_font_module = importlib.import_module("PIL.ImageFont")
        if mono:
            candidates = [
                os.path.join(OG_FONT_DIR, "DejaVuSansMono.ttf"),
                "/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf",
                "/usr/share/fonts/TTF/DejaVuSansMono.ttf",
                "/usr/share/fonts/dejavu/DejaVuSansMono.ttf",
                "/usr/share/fonts/truetype/liberation2/LiberationMono-Regular.ttf",
                "/usr/share/fonts/truetype/liberation/LiberationMono-Regular.ttf",
                "DejaVuSansMono.ttf",
            ]
        elif bold:
            candidates = [
                os.path.join(OG_FONT_DIR, "DejaVuSans-Bold.ttf"),
                "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf",
                "/usr/share/fonts/TTF/DejaVuSans-Bold.ttf",
                "/usr/share/fonts/dejavu/DejaVuSans-Bold.ttf",
                "/usr/share/fonts/truetype/liberation2/LiberationSans-Bold.ttf",
                "/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf",
                "DejaVuSans-Bold.ttf",
            ]
        else:
            candidates = [
                os.path.join(OG_FONT_DIR, "DejaVuSans.ttf"),
                "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
                "/usr/share/fonts/TTF/DejaVuSans.ttf",
                "/usr/share/fonts/dejavu/DejaVuSans.ttf",
                "/usr/share/fonts/truetype/liberation2/LiberationSans-Regular.ttf",
                "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf",
                "DejaVuSans.ttf",
            ]

        for candidate in candidates:
            try:
                return image_font_module.truetype(candidate, size=size)
            except Exception:
                continue

        return image_font_module.load_default()
    except Exception:
        try:
            image_font_module = importlib.import_module("PIL.ImageFont")
            return image_font_module.load_default()
        except Exception:
            return None


def _fit_text(draw, text: str, font, max_width: int) -> str:
    candidate = text
    while candidate:
        bbox = draw.textbbox((0, 0), candidate, font=font)
        if bbox[2] - bbox[0] <= max_width:
            return candidate
        candidate = candidate[:-1]

    if text:
        return "…"
    return text


# Assets routes
@app.route("/assets/<path:path>")
def send_assets(path):
    if path.endswith(".json"):
        return send_from_directory(
            "templates/assets", path, mimetype="application/json"
        )

    if os.path.isfile("templates/assets/" + path):
        return send_from_directory("templates/assets", path)

    # Try looking in one of the directories
    filename: str = path.split("/")[-1]
    if (
        filename.endswith(".png")
        or filename.endswith(".jpg")
        or filename.endswith(".jpeg")
        or filename.endswith(".svg")
    ):
        if os.path.isfile("templates/assets/img/" + filename):
            return send_from_directory("templates/assets/img", filename)
        if os.path.isfile("templates/assets/img/favicon/" + filename):
            return send_from_directory("templates/assets/img/favicon", filename)

    return render_template("404.html"), 404


# region Special routes
@app.route("/favicon.png")
def faviconPNG():
    return send_from_directory("templates/assets/img", "favicon.png")


@app.route("/.well-known/<path:path>")
def wellknown(path):
    # Try to proxy to https://nathan.woodburn.au/.well-known/
    req = requests.get(f"https://nathan.woodburn.au/.well-known/{path}")
    return make_response(
        req.content, 200, {"Content-Type": req.headers["Content-Type"]}
    )


# endregion


# region Main routes
@app.route("/")
def index():
    return _render_index()


@app.route("/tx/<path:tx_hash>")
def tx_route(tx_hash):
    return _render_index("tx", tx_hash)


@app.route("/block/<path:block_id>")
def block_route(block_id):
    return _render_index("block", block_id)


@app.route("/header/<path:block_id>")
def header_route(block_id):
    return _render_index("header", block_id)


@app.route("/address/<path:address>")
def address_route(address):
    return _render_index("address", address)


@app.route("/name/<path:name>")
def name_route(name):
    return _render_index("name", name)


@app.route("/coin/<path:coin_hash>/<int:index>")
def coin_route(coin_hash, index):
    return _render_index("coin", f"{coin_hash}:{index}")


@app.route("/og-image")
def og_image():
    context = _get_og_image_context()
    title = context["title"]
    subtitle = context["subtitle"]
    search_type = context["search_type"]
    display_value = context["display_value"]
    value_font_size = context["value_font_size"]
    is_default_card = context["is_default_card"]

    type_text = escape(search_type)
    value_text = escape(display_value)
    title_text = escape(title)
    subtitle_text = escape(subtitle)

    if is_default_card:
        svg = f"""<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"1200\" height=\"630\" viewBox=\"0 0 1200 630\">
    <defs>
        <linearGradient id=\"bg\" x1=\"0\" y1=\"0\" x2=\"1\" y2=\"1\">
            <stop offset=\"0%\" stop-color=\"#040b1a\" />
            <stop offset=\"100%\" stop-color=\"#160a24\" />
        </linearGradient>
        <linearGradient id=\"accent\" x1=\"0\" y1=\"0\" x2=\"1\" y2=\"0\">
            <stop offset=\"0%\" stop-color=\"#cd408f\" />
            <stop offset=\"100%\" stop-color=\"#0c4fc2\" />
        </linearGradient>
    </defs>
    <rect width=\"1200\" height=\"630\" fill=\"url(#bg)\" />
    <circle cx=\"1100\" cy=\"80\" r=\"180\" fill=\"#08398c\" opacity=\"0.12\" />
    <circle cx=\"120\" cy=\"610\" r=\"240\" fill=\"#8e2d63\" opacity=\"0.11\" />
    <rect x=\"86\" y=\"74\" width=\"1028\" height=\"482\" rx=\"28\" fill=\"#0b1426\" stroke=\"#64748b\" />
    <rect x=\"130\" y=\"126\" width=\"176\" height=\"42\" rx=\"21\" fill=\"url(#accent)\" />
    <text x=\"218\" y=\"153\" text-anchor=\"middle\" fill=\"#ffffff\" font-size=\"19\" font-family=\"Inter, Arial, sans-serif\" font-weight=\"700\">Handshake</text>
    <text x=\"130\" y=\"246\" fill=\"#ffffff\" font-size=\"82\" font-family=\"Inter, Arial, sans-serif\" font-weight=\"800\">{title_text}</text>
    <text x=\"130\" y=\"302\" fill=\"#e5e7eb\" font-size=\"32\" font-family=\"Inter, Arial, sans-serif\">{subtitle_text}</text>
    <line x1=\"130\" y1=\"338\" x2=\"1070\" y2=\"338\" stroke=\"#64748b\" />
    <text x=\"130\" y=\"402\" fill=\"#f9fafb\" font-size=\"34\" font-family=\"Inter, Arial, sans-serif\" font-weight=\"600\">Blocks • Transactions • Addresses • Names</text>
    <text x=\"130\" y=\"452\" fill=\"#cbd5e1\" font-size=\"28\" font-family=\"Inter, Arial, sans-serif\">Real-time status, searchable history, and rich on-chain data.</text>
    <text x=\"86\" y=\"608\" fill=\"#cbd5e1\" font-size=\"24\" font-family=\"Inter, Arial, sans-serif\">explorer.hns.au</text>
</svg>"""
    else:
        svg = f"""<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"1200\" height=\"630\" viewBox=\"0 0 1200 630\">
    <defs>
        <linearGradient id=\"bg\" x1=\"0\" y1=\"0\" x2=\"1\" y2=\"1\">
            <stop offset=\"0%\" stop-color=\"#040b1a\" />
            <stop offset=\"100%\" stop-color=\"#160a24\" />
        </linearGradient>
        <linearGradient id=\"accent\" x1=\"0\" y1=\"0\" x2=\"1\" y2=\"0\">
            <stop offset=\"0%\" stop-color=\"#cd408f\" />
            <stop offset=\"100%\" stop-color=\"#0c4fc2\" />
        </linearGradient>
        <clipPath id=\"valueClip\">
            <rect x=\"96\" y=\"496\" width=\"1008\" height=\"52\" rx=\"4\" />
        </clipPath>
    </defs>
    <rect width=\"1200\" height=\"630\" fill=\"url(#bg)\" />
    <circle cx=\"1040\" cy=\"120\" r=\"180\" fill=\"#08398c\" opacity=\"0.11\" />
    <circle cx=\"160\" cy=\"580\" r=\"220\" fill=\"#8e2d63\" opacity=\"0.10\" />
    <rect x=\"72\" y=\"64\" width=\"240\" height=\"44\" rx=\"22\" fill=\"url(#accent)\" />
    <text x=\"192\" y=\"92\" text-anchor=\"middle\" fill=\"#ffffff\" font-size=\"20\" font-family=\"Inter, Arial, sans-serif\" font-weight=\"700\">{type_text}</text>
    <text x=\"72\" y=\"188\" fill=\"#ffffff\" font-size=\"62\" font-family=\"Inter, Arial, sans-serif\" font-weight=\"700\">{title_text}</text>
    <text x=\"72\" y=\"252\" fill=\"#e5e7eb\" font-size=\"33\" font-family=\"Inter, Arial, sans-serif\">{subtitle_text}</text>
    <rect x=\"72\" y=\"472\" width=\"1056\" height=\"96\" rx=\"16\" fill=\"#0b1426\" stroke=\"#64748b\" />
    <text x=\"96\" y=\"530\" clip-path=\"url(#valueClip)\" fill=\"#f9fafb\" font-size=\"{value_font_size}\" font-family=\"'JetBrains Mono', 'Consolas', monospace\">{value_text}</text>
    <text x=\"72\" y=\"610\" fill=\"#cbd5e1\" font-size=\"24\" font-family=\"Inter, Arial, sans-serif\">explorer.hns.au</text>
</svg>"""

    response = make_response(svg)
    response.headers["Content-Type"] = "image/svg+xml; charset=utf-8"
    response.headers["Cache-Control"] = "public, max-age=300"
    return response


@app.route("/og-image.png")
def og_image_png():
    try:
        image_module = importlib.import_module("PIL.Image")
        image_draw_module = importlib.import_module("PIL.ImageDraw")
    except Exception:
        if os.path.isfile("templates/assets/img/og.png"):
            return send_from_directory("templates/assets/img", "og.png")
        return og_image()

    context = _get_og_image_context()
    title = context["title"]
    subtitle = context["subtitle"]
    search_type = context["search_type"]
    display_value = context["display_value"]
    is_default_card = context["is_default_card"]

    width, height = 1200, 630
    image = image_module.new("RGBA", (width, height), "#040b1a")
    draw = image_draw_module.Draw(image, "RGBA")

    draw.rectangle((0, 0, width, height), fill="#040b1a")
    draw.ellipse((920, -60, 1280, 300), fill=(8, 57, 140, 30))
    draw.ellipse((-120, 360, 360, 840), fill=(142, 45, 99, 32))

    title_font = _load_og_font(62, bold=True)
    subtitle_font = _load_og_font(33, bold=False)
    label_font = _load_og_font(20, bold=True)
    mono_font = _load_og_font(30, bold=False, mono=True)
    footer_font = _load_og_font(24, bold=False)

    if is_default_card:
        draw.rounded_rectangle(
            (86, 74, 1114, 556), radius=28, fill="#0b1426", outline="#64748b", width=2
        )
        draw.rounded_rectangle((130, 126, 306, 168), radius=21, fill="#cd408f")
        draw.text((165, 133), "Handshake", fill="#ffffff", font=label_font)

        nice_title_font = _load_og_font(82, bold=True)
        nice_subtitle_font = _load_og_font(32, bold=False)
        features_font = _load_og_font(34, bold=True)
        subfeatures_font = _load_og_font(28, bold=False)

        safe_title = _fit_text(draw, title, nice_title_font, 940)
        safe_subtitle = _fit_text(draw, subtitle, nice_subtitle_font, 940)
        draw.text((130, 206), safe_title, fill="#ffffff", font=nice_title_font)
        draw.text((130, 274), safe_subtitle, fill="#e5e7eb", font=nice_subtitle_font)
        draw.line((130, 338, 1070, 338), fill="#64748b", width=2)
        draw.text(
            (130, 372),
            "Blocks • Transactions • Addresses • Names",
            fill="#f9fafb",
            font=features_font,
        )
        draw.text(
            (130, 424),
            "Real-time status, searchable history, and rich on-chain data.",
            fill="#cbd5e1",
            font=subfeatures_font,
        )
        draw.text((86, 580), "explorer.hns.au", fill="#cbd5e1", font=footer_font)
    else:
        draw.rounded_rectangle((72, 64, 312, 108), radius=22, fill="#cd408f")

        safe_type = _fit_text(draw, search_type, label_font, 220)
        type_width = draw.textbbox((0, 0), safe_type, font=label_font)[2]
        draw.text(
            (192 - type_width // 2, 72), safe_type, fill="#ffffff", font=label_font
        )

        safe_title = _fit_text(draw, title, title_font, 1040)
        safe_subtitle = _fit_text(draw, subtitle, subtitle_font, 1040)
        draw.text((72, 144), safe_title, fill="#ffffff", font=title_font)
        draw.text((72, 214), safe_subtitle, fill="#e5e7eb", font=subtitle_font)

        draw.rounded_rectangle(
            (72, 472, 1128, 568), radius=16, fill="#0b1426", outline="#64748b", width=2
        )
        value_max_px = 1008
        safe_value = _fit_text(draw, display_value, mono_font, value_max_px)
        draw.text((96, 500), safe_value, fill="#f9fafb", font=mono_font)

        draw.text((72, 580), "explorer.hns.au", fill="#cbd5e1", font=footer_font)

    output = BytesIO()
    image.convert("RGB").save(output, format="PNG", optimize=True)
    output.seek(0)
    response = send_file(output, mimetype="image/png")
    response.headers["Cache-Control"] = "public, max-age=300"
    return response


@app.route("/<path:path>")
def catch_all(path: str):
    if os.path.isfile("templates/" + path):
        return render_template(path)

    # Try with .html
    if os.path.isfile("templates/" + path + ".html"):
        return render_template(path + ".html")

    if os.path.isfile("templates/" + path.strip("/") + ".html"):
        return render_template(path.strip("/") + ".html")

    # Try to find a file matching
    if path.count("/") < 1:
        # Try to find a file matching
        filename = find(path, "templates")
        if filename:
            return send_file(filename)

    return render_template("404.html"), 404


# endregion


# region API routes
@app.route("/api/v1/namehash/<namehash>")
def namehash_api(namehash):
    db = get_db()
    cur = db.execute("SELECT * FROM names WHERE namehash = ?", (namehash,))
    row = cur.fetchone()
    if row is None:
        # Get namehash from hsd.hns.au
        req = requests.get(f"https://hsd.hns.au/api/v1/namehash/{namehash}")
        if req.status_code == 200:
            name = req.json().get("result")
            if not name:
                return jsonify({"name": "Error", "namehash": namehash})
            # Insert into database
            db.execute(
                "INSERT OR REPLACE INTO names (namehash, name) VALUES (?, ?)",
                (namehash, name),
            )
            db.commit()
            return jsonify({"name": name, "namehash": namehash})
    return jsonify(dict(row))


@app.route("/api/v1/status")
def api_status():
    # Count number of names in database
    db = get_db()
    cur = db.execute("SELECT COUNT(*) as count FROM names")
    row = cur.fetchone()
    name_count = row["count"] if row else 0

    return jsonify(
        {
            "status": "ok",
            "service": "FireExplorer",
            "version": "1.0.0",
            "names_cached": name_count,
        }
    )


@app.route("/api/v1/hip02/<domain>")
def hip02(domain: str):
    hip2_record = hip2(domain)
    if hip2_record:
        return jsonify(
            {
                "success": True,
                "address": hip2_record,
                "method": "hip02",
                "name": domain,
            }
        )

    wallet_record = wallet_txt(domain)
    if wallet_record:
        return jsonify(
            {
                "success": True,
                "address": wallet_record,
                "method": "wallet_txt",
                "name": domain,
            }
        )
    return jsonify(
        {
            "success": False,
            "name": domain,
            "error": "No HIP02 or WALLET record found for this domain",
        }
    )


@app.route("/api/v1/covenant", methods=["POST"])
def covenant_api():
    data = request.get_json()

    if isinstance(data, list):
        covenants = data
        results = []

        # Collect all namehashes needed
        namehashes = set()
        for cov in covenants:
            items = cov.get("items", [])
            if items:
                namehashes.add(items[0])

        # Batch DB lookup
        db = get_db()
        known_names = {}
        if namehashes:
            placeholders = ",".join("?" for _ in namehashes)
            cur = db.execute(
                f"SELECT namehash, name FROM names WHERE namehash IN ({placeholders})",
                list(namehashes),
            )
            for row in cur:
                known_names[row["namehash"]] = row["name"]

        # Identify missing namehashes
        missing_hashes = [nh for nh in namehashes if nh not in known_names]

        # Fetch missing from HSD
        session = requests.Session()
        for nh in missing_hashes:
            try:
                req = session.get(f"https://hsd.hns.au/api/v1/namehash/{nh}")
                if req.status_code == 200:
                    name = req.json().get("result")
                    if name:
                        known_names[nh] = name
                        # Update DB
                        db.execute(
                            "INSERT OR REPLACE INTO names (namehash, name) VALUES (?, ?)",
                            (nh, name),
                        )
            except Exception as e:
                print(f"Error fetching namehash {nh}: {e}")

        db.commit()

        # Build results
        for cov in covenants:
            action = cov.get("action")
            items = cov.get("items", [])

            if not action:
                results.append({"covenant": cov, "display": "Unknown"})
                continue

            display = f"{action}"
            if items:
                nh = items[0]
                if nh in known_names:
                    name = known_names[nh]
                    display += f' <a href="/name/{name}">{name}</a>'

            results.append({"covenant": cov, "display": display})

        return jsonify(results)

    # Get the covenant data
    action = data.get("action")
    items = data.get("items", [])

    if not action:
        return jsonify({"success": False, "data": data})

    display = f"{action}"
    if len(items) > 0:
        name_hash = items[0]
        # Lookup name from database
        db = get_db()
        cur = db.execute("SELECT * FROM names WHERE namehash = ?", (name_hash,))
        row = cur.fetchone()
        if row:
            name = row["name"]
            display += f' <a href="/name/{name}">{name}</a>'
        else:
            req = requests.get(f"https://hsd.hns.au/api/v1/namehash/{name_hash}")
            if req.status_code == 200:
                name = req.json().get("result")
                if name:
                    display += f" {name}"
                    # Insert into database
                    db.execute(
                        "INSERT OR REPLACE INTO names (namehash, name) VALUES (?, ?)",
                        (name_hash, name),
                    )
                    db.commit()

    return jsonify({"success": True, "data": data, "display": display})


# endregion


# region Error Catching
# 404 catch all
@app.errorhandler(404)
def not_found(e):
    return render_template("404.html"), 404


# endregion
if __name__ == "__main__":
    app.run(debug=True, port=5000, host="127.0.0.1")