import { chromium } from "playwright";
import { writeFileSync, appendFileSync } from "fs";

const LOG_FILE = "flightics_explore.log";
writeFileSync(LOG_FILE, `=== Flightics Full Exploration - ${new Date().toISOString()} ===\n\n`);

function log(text) {
  console.log(text);
  appendFileSync(LOG_FILE, text + "\n");
}

const browser = await chromium.launch({ headless: true });
const context = await browser.newContext({
  userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36",
});
const page = await context.newPage();

const allRequests = new Map();

page.on("request", (req) => {
  const url = req.url();
  const method = req.method();
  const rt = req.resourceType();
  if ((rt === "xhr" || rt === "fetch") && url.includes("flightics.com")) {
    const key = `${method} ${url.split("?")[0]}`;
    if (!allRequests.has(key)) {
      allRequests.set(key, { method, url, headers: req.headers(), postData: req.postData() });
      log(`\n>>> ${method} ${url}`);
      if (req.postData()) log(`    BODY: ${req.postData()}`);
    }
  }
});

page.on("response", async (res) => {
  const req = res.request();
  const url = res.url();
  if ((req.resourceType() === "xhr" || req.resourceType() === "fetch") && url.includes("flightics.com")) {
    try {
      const ct = res.headers()["content-type"] || "";
      if (ct.includes("json")) {
        const body = await res.json();
        log(`<<< ${res.status()} ${url}`);
        log(`    RESPONSE: ${JSON.stringify(body, null, 2).substring(0, 3000)}`);
      } else if (ct.includes("grpc")) {
        log(`<<< ${res.status()} ${url} [grpc-web binary]`);
        const buf = await res.body();
        log(`    RESPONSE SIZE: ${buf.length} bytes`);
      }
    } catch {}
  }
});

log("=== PHASE 1: Homepage ===");
await page.goto("https://www.flightics.com/en");
await page.waitForTimeout(3000);

log("\n=== PHASE 2: Inspiration pages ===");
// Try different inspiration endpoints
const airports = ["MAD", "BCN", "AGP", "GRX", "SVQ", "VLC", "PMI", "TFS", "LPA"];
for (const apt of airports.slice(0, 3)) {
  try {
    await page.goto(`https://www.flightics.com/en/from/${apt.toLowerCase()}`);
    await page.waitForTimeout(2000);
  } catch {}
}

log("\n=== PHASE 3: Search with different params ===");
// One-way search
await page.goto("https://www.flightics.com/en/trip/1-0-0/20-05-2026/mad/nte/0-0");
await page.waitForTimeout(5000);

// Multi-city / complex
await page.goto("https://www.flightics.com/en/trip/2-0-0/01-06-2026_15-06-2026/mad/nte/3-7");
await page.waitForTimeout(5000);

// Explore URL patterns
await page.goto("https://www.flightics.com/en/trip/1-0-0/20-05-2026/bcn/cdg/0-0?maxStops=0");
await page.waitForTimeout(5000);

log("\n=== PHASE 4: Probing API endpoints ===");
// Try common API patterns
const probeEndpoints = [
  { method: "GET", path: "/api/v1" },
  { method: "GET", path: "/api/v1/airports" },
  { method: "GET", path: "/api/v1/airlines" },
  { method: "GET", path: "/api/v1/routes" },
  { method: "GET", path: "/api/v1/countries" },
  { method: "GET", path: "/api/v1/cities" },
  { method: "GET", path: "/api/v1/cheapest" },
  { method: "GET", path: "/api/v1/calendar" },
  { method: "GET", path: "/api/v1/prices" },
  { method: "GET", path: "/api/v1/inspirations" },
  { method: "GET", path: "/api/v1/inspirations/search?from=MAD&take=100&locale=en" },
  { method: "GET", path: "/api/v1/inspirations/search?from=BCN&take=100&locale=en" },
  { method: "GET", path: "/api/v1/inspirations/search?from=MAD,BCN,AGP,GRX,SVQ,VLC&take=100&locale=en" },
  { method: "GET", path: "/api/v2" },
  { method: "GET", path: "/api/v2/trips/search" },
  { method: "GET", path: "/api" },
  { method: "GET", path: "/_configuration" },
  { method: "GET", path: "/_blazor" },
  { method: "POST", path: "/api/v1/trips/search/calendar" },
  { method: "POST", path: "/api/v1/trips/cheapest" },
  { method: "POST", path: "/api/v1/airports/search" },
  { method: "POST", path: "/api/v1/routes/search" },
  { method: "GET", path: "/api/v1/config" },
  { method: "GET", path: "/api/v1/settings" },
  { method: "GET", path: "/api/v1/meta" },
  { method: "GET", path: "/api/v1/health" },
  { method: "GET", path: "/api/v1/version" },
  { method: "GET", path: "/api/v1/status" },
  { method: "GET", path: "/api/v1/sitemap" },
];

// Also probe gRPC services
const grpcServices = [
  "trips.v1.TripService/SearchTrips",
  "trips.v1.TripService/GetTripDetail",
  "trips.v1.TripService/CheckTrip",
  "locations.v1.LocationsService/GetLocationsV1",
  "locations.v1.LocationsService/SearchLocations",
  "inspirations.v1.InspirationService/GetInspirationsV1",
  "inspirations.v1.InspirationService/SearchInspirations",
  "airports.v1.AirportService/GetAirports",
  "airports.v1.AirportService/SearchAirports",
  "airlines.v1.AirlineService/GetAirlines",
  "routes.v1.RouteService/GetRoutes",
  "prices.v1.PriceService/GetPrices",
  "calendar.v1.CalendarService/GetCalendar",
];

for (const ep of probeEndpoints) {
  const url = `https://www.flightics.com${ep.path}`;
  try {
    const opts = { method: ep.method, headers: { "Content-Type": "application/json" } };
    if (ep.method === "POST") opts.body = JSON.stringify({});
    const res = await page.evaluate(async ({ url, opts }) => {
      try {
        const r = await fetch(url, opts);
        const text = await r.text();
        return { status: r.status, body: text.substring(0, 2000), contentType: r.headers.get("content-type") };
      } catch (e) {
        return { status: -1, body: e.message, contentType: null };
      }
    }, { url, opts });
    if (res.status !== 404 && res.status !== -1 && res.status !== 405) {
      log(`\n[PROBE] ${ep.method} ${ep.path} => ${res.status} (${res.contentType})`);
      log(`    ${res.body.substring(0, 1500)}`);
    } else {
      log(`[PROBE] ${ep.method} ${ep.path} => ${res.status}`);
    }
  } catch (e) {
    log(`[PROBE] ${ep.method} ${ep.path} => ERROR: ${e.message}`);
  }
}

for (const svc of grpcServices) {
  const url = `https://www.flightics.com/${svc}`;
  try {
    const res = await page.evaluate(async ({ url }) => {
      try {
        const r = await fetch(url, {
          method: "POST",
          headers: {
            "Content-Type": "application/grpc-web",
            "x-user-agent": "grpc-dotnet/2.76.0",
            "grpc-accept-encoding": "identity,gzip,deflate",
          },
          body: new Uint8Array([0, 0, 0, 0, 0]),
        });
        return { status: r.status, headers: Object.fromEntries(r.headers.entries()) };
      } catch (e) {
        return { status: -1, error: e.message };
      }
    }, { url });
    const grpcStatus = res.headers?.["grpc-status"];
    if (res.status === 200 || grpcStatus !== undefined) {
      log(`\n[gRPC] ${svc} => HTTP ${res.status}, grpc-status: ${grpcStatus || "N/A"}`);
      log(`    Headers: ${JSON.stringify(res.headers)}`);
    } else {
      log(`[gRPC] ${svc} => ${res.status}`);
    }
  } catch (e) {
    log(`[gRPC] ${svc} => ERROR: ${e.message}`);
  }
}

log("\n=== PHASE 5: Try search with POST body variations ===");
const searchVariations = [
  // One-way
  {
    departures: ["MAD"],
    local: "en",
    departureDateInterval: { begin: "2026-05-20T00:00:00+00:00", end: "2026-05-20T00:00:00+00:00" },
    stops: [{ locations: ["NTE"], stayRange: { min: 0, max: 0 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: false }],
    endInSameLocation: false, maxStops: null, fixStopsOrder: false,
    stopLength: { min: 0, max: 0, isSet: false }, maxResults: 10,
    passengersCount: { adult: 1, child: 0, infant: 0 }
  },
  // Anywhere destination (empty locations)
  {
    departures: ["MAD"],
    local: "en",
    departureDateInterval: { begin: "2026-06-01T00:00:00+00:00", end: "2026-06-30T00:00:00+00:00" },
    stops: [{ locations: [], stayRange: { min: 48, max: 168 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: true }, { locations: ["MAD"], stayRange: { min: 0, max: 0 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: false }],
    endInSameLocation: false, maxStops: null, fixStopsOrder: false,
    stopLength: { min: 0, max: 0, isSet: false }, maxResults: 10,
    passengersCount: { adult: 1, child: 0, infant: 0 }
  },
  // Multi-stop (3 cities)
  {
    departures: ["MAD"],
    local: "en",
    departureDateInterval: { begin: "2026-06-01T00:00:00+00:00", end: "2026-06-30T00:00:00+00:00" },
    stops: [
      { locations: ["PAR"], stayRange: { min: 48, max: 72 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: true },
      { locations: ["ROM"], stayRange: { min: 48, max: 72 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: true },
      { locations: ["MAD"], stayRange: { min: 0, max: 0 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: false },
    ],
    endInSameLocation: false, maxStops: null, fixStopsOrder: false,
    stopLength: { min: 0, max: 0, isSet: false }, maxResults: 10,
    passengersCount: { adult: 1, child: 0, infant: 0 }
  },
  // Direct flights only
  {
    departures: ["BCN"],
    local: "en",
    departureDateInterval: { begin: "2026-06-01T00:00:00+00:00", end: "2026-06-15T00:00:00+00:00" },
    stops: [{ locations: ["LHR"], stayRange: { min: 48, max: 120 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: true }, { locations: ["BCN"], stayRange: { min: 0, max: 0 }, stayDateRange: { begin: "0001-01-01T00:00:00", end: "0001-01-01T00:00:00" }, continueFromAny: false }],
    endInSameLocation: false, maxStops: 0, fixStopsOrder: false,
    stopLength: { min: 0, max: 0, isSet: false }, maxResults: 10,
    passengersCount: { adult: 1, child: 0, infant: 0 }
  },
];

for (let i = 0; i < searchVariations.length; i++) {
  const variant = searchVariations[i];
  log(`\n--- Search variation ${i + 1} ---`);
  try {
    const res = await page.evaluate(async ({ body }) => {
      const r = await fetch("https://www.flightics.com/api/v1/trips/search", {
        method: "POST",
        headers: { "Content-Type": "application/json; charset=utf-8" },
        body: JSON.stringify(body),
      });
      const data = await r.json();
      return { status: r.status, tripCount: data.trips?.length || 0, sample: JSON.stringify(data).substring(0, 2000) };
    }, { body: variant });
    log(`[SEARCH] Status: ${res.status}, Trips: ${res.tripCount}`);
    log(`    Body sent: ${JSON.stringify(variant).substring(0, 500)}`);
    if (res.tripCount > 0) {
      log(`    Sample: ${res.sample.substring(0, 1000)}`);
    }
  } catch (e) {
    log(`[SEARCH] ERROR: ${e.message}`);
  }
}

log("\n=== PHASE 6: Explore sitemap and other pages ===");
const pagesToVisit = [
  "/en/about",
  "/en/privacy",
  "/en/terms",
  "/en/faq",
  "/en/contact",
  "/en/blog",
  "/en/destinations",
  "/en/airlines",
  "/en/airports",
  "/en/cheap-flights",
  "/en/map",
  "/en/calendar",
  "/en/explore",
  "/en/anywhere",
  "/sitemap.xml",
  "/robots.txt",
];

for (const p of pagesToVisit) {
  try {
    const res = await page.evaluate(async ({ url }) => {
      const r = await fetch(url);
      return { status: r.status, contentType: r.headers.get("content-type"), size: (await r.text()).length };
    }, { url: `https://www.flightics.com${p}` });
    if (res.status !== 404) {
      log(`[PAGE] ${p} => ${res.status} (${res.contentType}, ${res.size} bytes)`);
    }
  } catch {}
}

// Try to get the blazor boot manifest to discover API surface
log("\n=== PHASE 7: Blazor manifest ===");
try {
  const res = await page.evaluate(async () => {
    const r = await fetch("https://www.flightics.com/_framework/blazor.boot.json");
    if (r.ok) return await r.text();
    return `Status: ${r.status}`;
  });
  if (res.length < 5000) {
    log(`[BLAZOR] boot.json: ${res}`);
  } else {
    log(`[BLAZOR] boot.json: ${res.length} bytes (too large, checking for API hints...)`);
    // Extract interesting parts
    const matches = res.match(/[A-Za-z]+\.(Api|Service|Grpc|Client)[A-Za-z.]*/g);
    if (matches) {
      log(`    API-related assemblies: ${[...new Set(matches)].join(", ")}`);
    }
  }
} catch (e) {
  log(`[BLAZOR] ERROR: ${e.message}`);
}

log("\n\n=== SUMMARY OF UNIQUE ENDPOINTS ===");
for (const [key, val] of allRequests) {
  log(`  ${key}`);
}

log("\n=== DONE ===");
await browser.close();