import {
  Match,
  Show,
  Switch,
  createEffect,
  createMemo,
  createResource,
  createSignal,
  onMount,
} from "solid-js";
import { useNavigate } from "@solidjs/router";
import { useAuth, RequireAuth } from "~/lib/auth";
import DashboardDesignPreview from "~/components/admin/DashboardDesignPreview";
import DashboardShell from "~/components/DashboardShell";
import ProfilePage from "~/components/dashboard/ProfilePage";
import PortfolioPage from "~/components/dashboard/PortfolioPage";
import VerificationStatusPage from "~/components/dashboard/VerificationStatusPage";
import CompanyJobsPage from "~/components/dashboard/CompanyJobsPage";
import CompanyApplicationsPage from "~/components/dashboard/CompanyApplicationsPage";
import SettingsPage from "~/components/dashboard/SettingsPage";
import MyDashboardPage from "~/components/dashboard/MyDashboardPage";
import CustomerRequirementsPage from "~/components/dashboard/CustomerRequirementsPage";
import CustomerResponsesPage from "~/components/dashboard/CustomerResponsesPage";
import CompanyShortlistedCandidatesPage from "~/components/dashboard/CompanyShortlistedCandidatesPage";
import JobSeekerApplicationsPage from "~/components/dashboard/JobSeekerApplicationsPage";
import JobSeekerSavedJobsPage from "~/components/dashboard/JobSeekerSavedJobsPage";
import JobSeekerJobsPage from "~/components/dashboard/JobSeekerJobsPage";
import ProfessionalLeadsPage from "~/components/dashboard/ProfessionalLeadsPage";
import ProfessionalResponsesPage from "~/components/dashboard/ProfessionalResponsesPage";
import CreditsPage from "~/components/dashboard/CreditsPage";
import ExploreServicesPage from "~/components/dashboard/ExploreServicesPage";
import HelpCenterDashboardPage from "~/components/dashboard/HelpCenterDashboardPage";
import SwitchServicesPage from "~/components/dashboard/SwitchServicesPage";
import LogoutPage from "~/components/dashboard/LogoutPage";
import { PROFESSIONAL_ROLE_SET } from "~/components/dashboard/RoleDashboardShared";

// Sidebar items that have real data implementations (wired to backend APIs)
// These show real components instead of DashboardDesignPreview mock
const BASE_REAL_PAGES = ["my dashboard", "my profile", "my portfolio", "verification", "settings"];
const COMMON_REAL_PAGES = [
  "credits",
  "explore nxtgauge",
  "help center",
  "switch services",
  "logout",
];
const COMPANY_REAL_PAGES = ["jobs", "applications", "shortlisted candidates"];
const CUSTOMER_REAL_PAGES = ["my requirements", "received responses", "shortlisted responses"];
const JOB_SEEKER_REAL_PAGES = ["jobs", "my applications", "saved jobs", "my portfolio"];
const PROFESSIONAL_REAL_PAGES = ["leads", "my responses"];

type RoleKey =
  | "COMPANY"
  | "CUSTOMER"
  | "JOB_SEEKER"
  | "PHOTOGRAPHER"
  | "MAKEUP_ARTIST"
  | "TUTOR"
  | "DEVELOPER"
  | "VIDEO_EDITOR"
  | "UGC_CONTENT_CREATOR"
  | "GRAPHIC_DESIGNER"
  | "SOCIAL_MEDIA_MANAGER"
  | "FITNESS_TRAINER"
  | "CATERING_SERVICES";

type RuntimeBundle = {
  role: RoleKey;
  status: "ACTIVE" | "INACTIVE";
  sidebarItems: string[];
  tabs: string[];
  widgets: string[];
  fields: string[];
  verificationStatus?: string;
  source: "dashboard-config";
};

const API_GATEWAY = "/api/gateway";
const SERVER_API_BASE = (process.env.PUBLIC_API_URL || "http://localhost:8080/api").replace(
  /\/+$/,
  ""
);

const ROLE_OPTIONS: RoleKey[] = [
  "COMPANY",
  "CUSTOMER",
  "JOB_SEEKER",
  "PHOTOGRAPHER",
  "MAKEUP_ARTIST",
  "TUTOR",
  "DEVELOPER",
  "VIDEO_EDITOR",
  "UGC_CONTENT_CREATOR",
  "GRAPHIC_DESIGNER",
  "SOCIAL_MEDIA_MANAGER",
  "FITNESS_TRAINER",
  "CATERING_SERVICES",
];

const ROLE_BASED_SIDEBAR: Record<RoleKey, string[]> = {
  PHOTOGRAPHER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  MAKEUP_ARTIST: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  TUTOR: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  DEVELOPER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  VIDEO_EDITOR: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  UGC_CONTENT_CREATOR: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  GRAPHIC_DESIGNER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  SOCIAL_MEDIA_MANAGER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  FITNESS_TRAINER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  CATERING_SERVICES: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Leads",
    "My Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  COMPANY: [
    "My Dashboard",
    "My Profile",
    "Jobs",
    "Applications",
    "Shortlisted Candidates",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  JOB_SEEKER: [
    "My Dashboard",
    "My Profile",
    "My Portfolio",
    "Jobs",
    "My Applications",
    "Saved Jobs",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
  CUSTOMER: [
    "My Dashboard",
    "My Profile",
    "My Requirements",
    "Received Responses",
    "Shortlisted Responses",
    "Credits",
    "Explore Nxtgauge",
    "Verification",
    "Help Center",
    "Settings",
    "Switch Services",
    "Logout",
  ],
};

const ROLE_PREFIXES: Record<string, string> = {
  PHOTOGRAPHER: "photographers",
  MAKEUP_ARTIST: "makeup-artists",
  TUTOR: "tutors",
  DEVELOPER: "developers",
  VIDEO_EDITOR: "video-editors",
  GRAPHIC_DESIGNER: "graphic-designers",
  SOCIAL_MEDIA_MANAGER: "social-media-managers",
  FITNESS_TRAINER: "fitness-trainers",
  CATERING_SERVICES: "catering-services",
  UGC_CONTENT_CREATOR: "ugc-content-creators",
  CUSTOMER: "customers",
  COMPANY: "companies",
  JOB_SEEKER: "jobseeker",
};

function getNameFromStorage(): string {
  if (typeof window === "undefined") return "User";
  const keys = ["nxtgauge_signup_profile_v1", "nxtgauge_auth_user", "nxtgauge_user"];
  for (const key of keys) {
    try {
      const raw = window.localStorage.getItem(key) || window.sessionStorage.getItem(key);
      if (!raw) continue;
      const parsed = JSON.parse(raw);
      const name =
        parsed?.name || parsed?.first_name || parsed?.user?.name || parsed?.user?.first_name;
      if (name) return String(name);
    } catch {
      /* ignore */
    }
  }
  return "User";
}

const EXPLORE_ROLES = [
  { key: "PHOTOGRAPHER", name: "Photographer" },
  { key: "MAKEUP_ARTIST", name: "Makeup Artist" },
  { key: "TUTOR", name: "Tutor" },
  { key: "DEVELOPER", name: "Developer" },
  { key: "VIDEO_EDITOR", name: "Video Editor" },
  { key: "UGC_CONTENT_CREATOR", name: "UGC Content Creator" },
  { key: "GRAPHIC_DESIGNER", name: "Graphic Designer" },
  { key: "SOCIAL_MEDIA_MANAGER", name: "Social Media Manager" },
  { key: "FITNESS_TRAINER", name: "Fitness Trainer" },
  { key: "CATERING_SERVICES", name: "Catering Services" },
];

function normalizeRole(value: string): RoleKey {
  const up = String(value || "")
    .trim()
    .toUpperCase()
    .replace(/\s+/g, "_");
  return (ROLE_OPTIONS.find((r) => r === up) || "JOB_SEEKER") as RoleKey;
}

function asStringArray(value: unknown): string[] {
  if (!Array.isArray(value)) return [];
  return value.map((item) => String(item || "").trim()).filter(Boolean);
}

function getInitialRoleFromStorage(): RoleKey {
  if (typeof window === "undefined") return "JOB_SEEKER";
  const keys = ["nxtgauge_signup_profile_v1", "nxtgauge_auth_user", "nxtgauge_user"];
  for (const key of keys) {
    try {
      const raw = window.localStorage.getItem(key) || window.sessionStorage.getItem(key);
      if (!raw) continue;
      const parsed = JSON.parse(raw);
      const found = normalizeRole(
        String(
          parsed?.roleKey ||
            parsed?.role ||
            parsed?.active_role ||
            parsed?.user?.active_role ||
            parsed?.user?.roles?.[0] ||
            ""
        )
      );
      if (ROLE_OPTIONS.includes(found)) return found;
    } catch {
      // ignore invalid payload
    }
  }
  return "JOB_SEEKER";
}

async function fetchJson(path: string): Promise<any | null> {
  try {
    const isServer = typeof window === "undefined";
    const target = isServer ? `${SERVER_API_BASE}${path}` : `${API_GATEWAY}${path}`;
    const res = await fetch(target, { credentials: "include" });
    if (!res.ok) return null;
    return await res.json();
  } catch {
    return null;
  }
}

async function loadRoleBundle(role: RoleKey): Promise<RuntimeBundle | null> {
  if (typeof window === "undefined") {
    return null;
  }
  const runtime = await fetchJson("/api/runtime-config");
  if (runtime) {
    const runtimeRole = normalizeRole(String(runtime?.role || runtime?.user?.active_role || role));
    const runtimeSidebar = asStringArray(
      runtime?.dashboard_config?.sidebar_items ??
        runtime?.dashboard_config?.sidebarItems ??
        runtime?.sidebar_items ??
        runtime?.sidebarItems
    );
    const runtimeTabs = asStringArray(runtime?.dashboard_config?.tabs ?? runtime?.tabs);
    const runtimeWidgetsRaw = Array.isArray(runtime?.dashboard_config?.widgets)
      ? runtime.dashboard_config.widgets
      : Array.isArray(runtime?.widgets)
        ? runtime.widgets
        : [];
    const runtimeWidgets = runtimeWidgetsRaw
      .map((item: any) =>
        String(typeof item === "string" ? item : item?.key || item?.id || "").trim()
      )
      .filter(Boolean);
    const runtimeFields = asStringArray(runtime?.dashboard_config?.fields ?? runtime?.fields);

    return {
      role: runtimeRole,
      status: "ACTIVE",
      sidebarItems: runtimeSidebar,
      tabs: runtimeTabs,
      widgets: runtimeWidgets,
      fields: runtimeFields,
      verificationStatus:
        String(
          runtime?.verification_status || runtime?.user?.verification_status || ""
        ).toUpperCase() || undefined,
      source: "dashboard-config",
    };
  }

  let payload = await fetchJson(
    `/api/config/dashboard/by-key/${encodeURIComponent(role)}?audience=EXTERNAL`
  );
  if (!payload) {
    const listPayload = await fetchJson("/api/admin/dashboard-config?audience=EXTERNAL");
    const rows = Array.isArray(listPayload)
      ? listPayload
      : Array.isArray(listPayload?.items)
        ? listPayload.items
        : [];
    const matched = rows.find(
      (row: any) => String(row?.role_key || row?.config_json?.role_key || "").toUpperCase() === role
    );
    if (matched) payload = matched;
  }
  const config = (payload?.config_json || payload || null) as Record<string, unknown> | null;
  if (!config) return null;
  const sidebarItems = asStringArray(
    (config as any)?.sidebar_items ?? (config as any)?.sidebarItems
  );
  const tabs = asStringArray((config as any)?.tabs);
  const widgetsRaw = Array.isArray((config as any)?.widgets) ? (config as any).widgets : [];
  const widgets = widgetsRaw
    .map((item: any) =>
      String(typeof item === "string" ? item : item?.key || item?.id || "").trim()
    )
    .filter(Boolean);
  const fields = asStringArray((config as any)?.fields);
  return {
    role,
    status: payload?.is_active === false ? "INACTIVE" : "ACTIVE",
    sidebarItems,
    tabs,
    widgets,
    fields,
    source: "dashboard-config",
  };
}

function mergeSidebar(
  role: RoleKey,
  runtimeSidebar: string[],
  verificationStatus?: string
): string[] {
  const base = ROLE_BASED_SIDEBAR[role] || [
    "My Dashboard",
    "My Profile",
    "Switch Services",
    "Logout",
  ];
  const fromRuntime = runtimeSidebar.filter(Boolean);
  const source = fromRuntime.length > 0 ? fromRuntime : base;
  const map = new Map<string, string>();
  for (const item of source) {
    const key = item.trim().toLowerCase();
    if (!map.has(key)) map.set(key, item);
  }
  let merged = Array.from(map.values());
  const status = String(verificationStatus || "").toUpperCase();
  const approved = status === "APPROVED";
  if (!approved && status) {
    const restricted = new Set([
      "my profile",
      "help center",
      "settings",
      "verification",
      "logout",
      ...(PROFESSIONAL_ROLE_SET.has(role) || role === "JOB_SEEKER"
        ? ["my portfolio", "credits"]
        : []),
    ]);
    merged = merged.filter((item) => restricted.has(item.trim().toLowerCase()));
  }
  return merged;
}

export default function RuntimeDashboardPage() {
  const navigate = useNavigate();
  const auth = useAuth();
  const [hydrated, setHydrated] = createSignal(false);
  const [role, setRole] = createSignal<RoleKey>("JOB_SEEKER");
  const [activeSidebar, setActiveSidebar] = createSignal("My Dashboard");
  const [activeTab, setActiveTab] = createSignal("overview");
  const [userName, setUserName] = createSignal("User");
  const [userId, setUserId] = createSignal("");

  onMount(() => {
    setHydrated(true);
    const storedRole = getInitialRoleFromStorage();
    setRole(storedRole);
    setUserName(getNameFromStorage());
    if (auth.user()) {
      const u = auth.user()!;
      if (u.full_name) setUserName(u.full_name);
      if (u.id) setUserId(u.id);
      if (u.active_role) setRole(normalizeRole(u.active_role));
    }
  });

  createEffect(() => {
    const u = auth.user();
    if (u) {
      if (u.full_name && userName() === "User") setUserName(u.full_name);
      if (u.id && !userId()) setUserId(u.id);
      if (u.active_role) setRole(normalizeRole(u.active_role));
    }
  });

  const [bundle] = createResource(() => role(), loadRoleBundle);

  const sidebarItems = createMemo(() =>
    mergeSidebar(role(), bundle()?.sidebarItems || [], bundle()?.verificationStatus)
  );

  createEffect(() => {
    const runtimeRole = bundle()?.role;
    if (runtimeRole && runtimeRole !== role()) setRole(runtimeRole);
  });

  createEffect(() => {
    const first = sidebarItems()[0] || "My Dashboard";
    const current = activeSidebar();
    const exists = sidebarItems().some((item) => item.toLowerCase() === current.toLowerCase());
    if (!exists) setActiveSidebar(first);
  });

  const tabs = createMemo(() => {
    const fromRuntime = bundle()?.tabs || [];
    return fromRuntime.length > 0 ? fromRuntime : ["overview"];
  });

  createEffect(() => {
    role();
    const firstTab = tabs()[0] || "overview";
    setActiveTab((prev) => (prev ? prev : firstTab));
  });

  const loading = createMemo(() => !hydrated() || bundle.loading);
  const ready = createMemo(() => hydrated() && !bundle.loading);

  const liveData = createMemo(() => {
    const prefix = ROLE_PREFIXES[role()];
    if (!prefix) return undefined;
    return { userName: userName(), userId: userId(), rolePrefix: prefix };
  });

  const isRealPage = createMemo(() => {
    const key = activeSidebar().toLowerCase();
    if (BASE_REAL_PAGES.includes(key)) return true;
    if (COMMON_REAL_PAGES.includes(key)) return true;
    if (role() === "COMPANY" && COMPANY_REAL_PAGES.includes(key)) return true;
    if (role() === "CUSTOMER" && CUSTOMER_REAL_PAGES.includes(key)) return true;
    if (role() === "JOB_SEEKER" && JOB_SEEKER_REAL_PAGES.includes(key)) return true;
    if (PROFESSIONAL_ROLE_SET.has(role()) && PROFESSIONAL_REAL_PAGES.includes(key)) return true;
    return false;
  });

  return (
    <RequireAuth>
      <main style={{ "min-height": "100vh", background: "#F3F4F6" }}>
        <Show when={loading()}>
          <div style={cardStyle}>Loading dashboard…</div>
        </Show>

        <Show when={ready()}>
          {/* ── Real pages: DashboardShell + actual components ── */}
          <Show when={isRealPage()}>
            <DashboardShell
              sidebarItems={sidebarItems()}
              activeSidebar={activeSidebar()}
              onSidebarSelect={setActiveSidebar}
              roleKey={role()}
              userName={userName()}
            >
              <Switch>
                <Match when={activeSidebar().toLowerCase() === "my dashboard"}>
                  <MyDashboardPage roleKey={role()} userName={userName()} />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "my profile"}>
                  <ProfilePage roleKey={role()} />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "my portfolio"}>
                  <PortfolioPage
                    roleKey={role()}
                    runtimeTabs={bundle()?.tabs || []}
                    runtimeFields={bundle()?.fields || []}
                  />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "verification"}>
                  <VerificationStatusPage roleKey={role()} onNavigate={setActiveSidebar} />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "settings"}>
                  <SettingsPage />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "credits"}>
                  <CreditsPage roleKey={role()} />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "explore nxtgauge"}>
                  <ExploreServicesPage />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "help center"}>
                  <HelpCenterDashboardPage roleKey={role()} />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "switch services"}>
                  <SwitchServicesPage />
                </Match>
                <Match when={activeSidebar().toLowerCase() === "logout"}>
                  <LogoutPage />
                </Match>
                <Match when={role() === "COMPANY" && activeSidebar().toLowerCase() === "jobs"}>
                  <CompanyJobsPage />
                </Match>
                <Match
                  when={role() === "COMPANY" && activeSidebar().toLowerCase() === "applications"}
                >
                  <CompanyApplicationsPage />
                </Match>
                <Match
                  when={
                    role() === "COMPANY" &&
                    activeSidebar().toLowerCase() === "shortlisted candidates"
                  }
                >
                  <CompanyShortlistedCandidatesPage />
                </Match>
                <Match
                  when={
                    role() === "CUSTOMER" && activeSidebar().toLowerCase() === "my requirements"
                  }
                >
                  <CustomerRequirementsPage />
                </Match>
                <Match
                  when={
                    role() === "CUSTOMER" && activeSidebar().toLowerCase() === "received responses"
                  }
                >
                  <CustomerResponsesPage mode="received" />
                </Match>
                <Match
                  when={
                    role() === "CUSTOMER" &&
                    activeSidebar().toLowerCase() === "shortlisted responses"
                  }
                >
                  <CustomerResponsesPage mode="shortlisted" />
                </Match>
                <Match
                  when={
                    role() === "JOB_SEEKER" && activeSidebar().toLowerCase() === "my applications"
                  }
                >
                  <JobSeekerApplicationsPage />
                </Match>
                <Match when={role() === "JOB_SEEKER" && activeSidebar().toLowerCase() === "jobs"}>
                  <JobSeekerJobsPage />
                </Match>
                <Match
                  when={role() === "JOB_SEEKER" && activeSidebar().toLowerCase() === "saved jobs"}
                >
                  <JobSeekerSavedJobsPage />
                </Match>
                <Match
                  when={
                    PROFESSIONAL_ROLE_SET.has(role()) && activeSidebar().toLowerCase() === "leads"
                  }
                >
                  <ProfessionalLeadsPage roleKey={role()} />
                </Match>
                <Match
                  when={
                    PROFESSIONAL_ROLE_SET.has(role()) &&
                    activeSidebar().toLowerCase() === "my responses"
                  }
                >
                  <ProfessionalResponsesPage roleKey={role()} />
                </Match>
              </Switch>
            </DashboardShell>
          </Show>

          {/* ── All other views: DashboardDesignPreview mock ── */}
          <Show when={!isRealPage()}>
            <DashboardDesignPreview
              status={bundle()?.status ?? "ACTIVE"}
              sidebarItems={sidebarItems()}
              activeSidebar={activeSidebar()}
              onSidebarSelect={setActiveSidebar}
              tabs={tabs()}
              activeTab={activeTab()}
              onTabSelect={setActiveTab}
              widgets={bundle()?.widgets || []}
              fields={bundle()?.fields || []}
              mode="customer_external"
              roleKey={role()}
              exploreRoles={EXPLORE_ROLES}
              hidePreviewHeader
              liveData={liveData()}
            />
          </Show>
        </Show>
      </main>
    </RequireAuth>
  );
}

const cardStyle = {
  border: "1px solid #E5E7EB",
  "border-radius": "12px",
  padding: "16px",
  background: "#fff",
  color: "#111827",
} as const;