"""Functional test of the isokit Studio (GUI) and its MCP endpoint, headless Edge."""
import json
import sys
import urllib.request
from pathlib import Path
from playwright.sync_api import sync_playwright

BASE = sys.argv[2] if len(sys.argv) > 2 else "http://127.0.0.1:7878"
OUT = Path(sys.argv[1])
OUT.mkdir(parents=True, exist_ok=True)
fails = []


def check(cond, msg):
    print(("ok   " if cond else "FAIL ") + msg)
    if not cond:
        fails.append(msg)


def get(path):
    return json.loads(urllib.request.urlopen(BASE + path).read())


def mcp(msg):
    req = urllib.request.Request(BASE + "/mcp", data=json.dumps(msg).encode(), headers={"Content-Type": "application/json"})
    r = urllib.request.urlopen(req)
    body = r.read()
    return json.loads(body) if body else None


def doc():
    return get("/api/doc")["doc"]


def obj(id_):
    return next((o for o in doc()["objects"] if o["id"] == id_), None)


with sync_playwright() as p:
    b = p.chromium.launch(channel="msedge", headless=True)
    pg = b.new_page(viewport={"width": 1500, "height": 950})
    errs = []
    pg.on("pageerror", lambda e: errs.append(str(e)))
    pg.on("console", lambda m: errs.append(m.text) if m.type == "error" else None)
    pg.goto(BASE + "/")
    pg.wait_for_selector(".iso-svg [data-obj]", timeout=10000)
    pg.wait_for_timeout(500)
    n0 = len(doc()["objects"])
    check(pg.locator("#objects li").count() == n0, f"object list shows {n0} objects")
    check(pg.locator(".st-tile").count() >= 20, "palette lists the prefabs")
    ver = pg.locator("#ver").inner_text()
    check(ver == "isokit " + get("/api/meta")["engine"], "status bar shows the engine version: " + ver)
    icon = urllib.request.urlopen(BASE + "/assets/studio/favicon.svg")
    check(icon.headers.get_content_type() == "image/svg+xml" and b"<svg" in icon.read(), "favicon served as SVG")
    pg.screenshot(path=str(OUT / "studio-start.jpg"), type="jpeg", quality=80)

    # place a tree: pick it in the palette, click an empty spot of the map
    pg.locator('.st-tile[data-type="tree"]').click()
    check(pg.locator("#hint").is_visible(), "placing hint shows")
    stage = pg.locator(".iso-stage").bounding_box()
    pg.mouse.click(stage["x"] + stage["width"] * 0.30, stage["y"] + stage["height"] * 0.62)
    pg.wait_for_timeout(700)
    d = doc()
    check(len(d["objects"]) == n0 + 1, "click on the map adds an object")
    new = d["objects"][-1]
    check(new["type"] == "tree", f"the new object is a tree at ({new['x']}, {new['y']})")
    check(pg.locator("#right h3").inner_text().strip().endswith("Tree"), "the new object is selected in the panel")

    # drag the generator
    g = obj("genset")
    # aim at the generator body (its group's box also spans the exhaust puffs above it)
    box = pg.locator('.iso-svg g[data-obj="genset"] path.iso-t').nth(1).bounding_box()
    cx, cy = box["x"] + box["width"] / 2, box["y"] + box["height"] / 2
    hit = pg.evaluate("([x, y]) => { const e = document.elementFromPoint(x, y); const g = e && e.closest('[data-obj]'); return g && g.getAttribute('data-obj'); }", [cx, cy])
    check(hit == "genset", f"pointer is on the generator ({hit})")
    pg.mouse.move(cx, cy)
    pg.mouse.down()
    for i in range(1, 11):
        pg.mouse.move(cx + 9 * i, cy + 3 * i)
        pg.wait_for_timeout(20)
    pg.mouse.up()
    pg.wait_for_timeout(700)
    g2 = obj("genset")
    check((g2["x"], g2["y"]) != (g["x"], g["y"]), f"drag moves the generator ({g['x']},{g['y']}) -> ({g2['x']},{g2['y']})")
    check(abs(g2["x"] * 2 - round(g2["x"] * 2)) < 1e-9, "the move snaps to 0.5 m")

    # edit a property of the building in the form
    pg.locator('#objects li[data-id="hall"]').click()
    pg.wait_for_timeout(300)
    inp = pg.locator('#right input[type=number][data-prop="floors"]')
    inp.fill("3")
    inp.press("Enter")
    pg.wait_for_timeout(700)
    check(obj("hall")["props"].get("floors") == 3, "the form sets floors = 3")
    pg.screenshot(path=str(OUT / "studio-selected.jpg"), type="jpeg", quality=80)

    # undo the floors change
    pg.locator("#undo").click()
    pg.wait_for_timeout(700)
    check(obj("hall")["props"].get("floors") == 2, "undo restores floors = 2")

    # keyboard: rotate and delete the new tree
    pg.locator(f'#objects li[data-id="{new["id"]}"]').click()
    pg.locator(".iso-svg").focus()
    pg.keyboard.press("Delete")
    pg.wait_for_timeout(700)
    check(obj(new["id"]) is None, "Delete removes the selected object")

    # an agent edits over MCP: the open Studio follows
    init = mcp({"jsonrpc": "2.0", "id": 1, "method": "initialize", "params": {"protocolVersion": "2025-06-18", "capabilities": {}, "clientInfo": {"name": "test", "version": "0"}}})
    check(init["result"]["serverInfo"]["name"] == "isokit", "MCP initialize")
    check(mcp({"jsonrpc": "2.0", "method": "notifications/initialized"}) is None, "MCP notification gets no body")
    tools = mcp({"jsonrpc": "2.0", "id": 2, "method": "tools/list"})["result"]["tools"]
    check(len(tools) >= 14, f"MCP lists {len(tools)} tools")
    r = mcp({"jsonrpc": "2.0", "id": 3, "method": "tools/call", "params": {"name": "add_object", "arguments": {"type": "container", "x": 20, "y": -1, "rot": 90, "name": "Spare parts", "props": {"stack": 2}}}})
    res = json.loads(r["result"]["content"][0]["text"])
    check(not r["result"]["isError"] and res["id"] == "container", f"MCP add_object -> {res.get('id')}, box {res.get('object', {}).get('box')}")
    bad = mcp({"jsonrpc": "2.0", "id": 4, "method": "tools/call", "params": {"name": "add_object", "arguments": {"type": "ufo", "x": 0, "y": 0}}})
    check(bad["result"]["isError"] and "available" in bad["result"]["content"][0]["text"], "MCP explains a bad type")
    pg.wait_for_timeout(2000)
    check(pg.locator('#objects li[data-id="container"]').count() == 1, "the Studio shows the agent's container")
    check(pg.locator('.iso-svg g[data-obj="container"]').count() >= 1, "the map draws the agent's container")
    summ = json.loads(mcp({"jsonrpc": "2.0", "id": 5, "method": "tools/call", "params": {"name": "render_view", "arguments": {"level": "gf"}}})["result"]["content"][0]["text"])
    check(summ["sprites"] > 20 and "container" in summ["boxes"], f"MCP render_view summary: {summ['sprites']} sprites, {summ['nodes']} nodes")
    chk = json.loads(mcp({"jsonrpc": "2.0", "id": 6, "method": "tools/call", "params": {"name": "check_project", "arguments": {}}})["result"]["content"][0]["text"])
    check(chk["ok"], f"MCP check_project ok ({len(chk['findings'])} findings)")

    # cross-origin edits are refused
    req = urllib.request.Request(BASE + "/api/op", data=b'{"op":"remove","id":"hall"}', headers={"Content-Type": "application/json", "Origin": "http://evil.example"})
    try:
        urllib.request.urlopen(req)
        check(False, "cross-origin POST refused")
    except urllib.error.HTTPError as e:
        check(e.code == 403, "cross-origin POST refused")

    # view controls still work in the Studio
    pg.locator('.iso-seg button[data-level="gf"]').click()
    pg.wait_for_timeout(600)
    check(pg.locator('.iso-seg button[data-level="gf"]').get_attribute("aria-pressed") == "true", "level switch")
    pg.locator('[data-a="rotr"]').click()
    pg.wait_for_timeout(600)
    pg.screenshot(path=str(OUT / "studio-gf.jpg"), type="jpeg", quality=80)
    check(not errs, f"no script errors {errs}")
    b.close()

print("FAILED:" if fails else "ALL PASSED", fails)
sys.exit(1 if fails else 0)