nxtgauge-frontend-solid/src/components/dashboard/CompanyJobsPage.tsx

/**
 * Company Jobs Page - Wired to real backend APIs
 * Endpoints:
 *   GET /api/companies/jobs - List company's jobs
 *   POST /api/companies/jobs - Create new job
 *   PATCH /api/companies/jobs/:id - Update job
 *   DELETE /api/companies/jobs/:id - Delete job
 */
import { For, Show, createMemo, createSignal, onMount } from "solid-js";
import {
  BTN_GHOST,
  BTN_PRIMARY,
  CARD,
  INPUT,
  LABEL,
} from "~/components/DashboardShell";

const API = "/api/gateway";

interface JobItem {
  id: string;
  title: string;
  description: string;
  location: string;
  job_type: string;
  status: string;
  category?: string | null;
  salary_min?: number | null;
  salary_max?: number | null;
  experience_years?: number | null;
  skills?: string[] | null;
  created_at?: string;
}

interface JobFormState {
  title: string;
  category: string;
  description: string;
  location: string;
  job_type: string;
  salary_min: string;
  salary_max: string;
  experience_years: string;
  skills: string;
}

type SortKey = "newest" | "salary_desc" | "salary_asc" | "title_asc";

const EMPTY_FORM: JobFormState = {
  title: "",
  category: "",
  description: "",
  location: "",
  job_type: "FULL_TIME",
  salary_min: "",
  salary_max: "",
  experience_years: "",
  skills: "",
};

async function apiFetch(path: string, opts?: RequestInit) {
  const token =
    typeof window !== "undefined"
      ? window.sessionStorage.getItem("nxtgauge_access_token") || ""
      : "";
  return fetch(`${API}${path}`, {
    ...opts,
    credentials: "include",
    headers: {
      "Content-Type": "application/json",
      ...(token ? { Authorization: `Bearer ${token}` } : {}),
      ...(opts?.headers ?? {}),
    },
  });
}

export default function CompanyJobsPage() {
  const [jobs, setJobs] = createSignal<JobItem[]>([]);
  const [loading, setLoading] = createSignal(true);
  const [showForm, setShowForm] = createSignal(false);
  const [form, setForm] = createSignal<JobFormState>({ ...EMPTY_FORM });
  const [saving, setSaving] = createSignal(false);
  const [error, setError] = createSignal("");
  const [actionMsg, setActionMsg] = createSignal("");
  const [busyJobId, setBusyJobId] = createSignal<string | null>(null);
  const [search, setSearch] = createSignal("");
  const [sortBy, setSortBy] = createSignal<SortKey>("newest");
  const [activeTag, setActiveTag] = createSignal("");

  const rowTags = (row: JobItem) => {
    const tags = new Set<string>();
    if (row.category) tags.add(String(row.category));
    if (Array.isArray(row.skills)) {
      for (const skill of row.skills) {
        const val = String(skill || "").trim();
        if (val) tags.add(val);
      }
    }
    return Array.from(tags);
  };

  const availableTags = createMemo(() => {
    const tags = new Set<string>();
    for (const row of jobs()) {
      for (const tag of rowTags(row)) tags.add(tag);
    }
    return Array.from(tags).sort((a, b) => a.localeCompare(b));
  });

  const filteredSortedJobs = createMemo(() => {
    const q = search().trim().toLowerCase();
    const tag = activeTag().trim().toLowerCase();
    const next = jobs().filter((row) => {
      const tags = rowTags(row);
      const matchesTag = !tag || tags.some((t) => t.toLowerCase() === tag);
      if (!matchesTag) return false;
      if (!q) return true;
      return (
        String(row.title || "").toLowerCase().includes(q) ||
        String(row.location || "").toLowerCase().includes(q) ||
        String(row.description || "").toLowerCase().includes(q) ||
        String(row.job_type || "").toLowerCase().includes(q) ||
        tags.some((t) => t.toLowerCase().includes(q))
      );
    });

    next.sort((a, b) => {
      if (sortBy() === "salary_desc") return Number(b.salary_max || b.salary_min || 0) - Number(a.salary_max || a.salary_min || 0);
      if (sortBy() === "salary_asc") return Number(a.salary_min || a.salary_max || 0) - Number(b.salary_min || b.salary_max || 0);
      if (sortBy() === "title_asc") return String(a.title || "").localeCompare(String(b.title || ""));
      return new Date(String(b.created_at || 0)).getTime() - new Date(String(a.created_at || 0)).getTime();
    });
    return next;
  });

  const loadJobs = async () => {
    setLoading(true);
    try {
      const res = await apiFetch("/api/companies/jobs?page=1&limit=50");
      if (!res.ok) {
        setJobs([]);
        return;
      }
      const payload = await res.json().catch(() => ({}));
      setJobs(Array.isArray(payload?.data) ? payload.data : []);
    } finally {
      setLoading(false);
    }
  };

  onMount(loadJobs);

  const setField = (key: keyof JobFormState, val: string) =>
    setForm((prev) => ({ ...prev, [key]: val }));

  const openCreate = () => {
    setForm({ ...EMPTY_FORM });
    setError("");
    setActionMsg("");
    setShowForm(true);
  };

  const closeCreate = () => {
    setShowForm(false);
    setForm({ ...EMPTY_FORM });
    setError("");
  };

  const handleCreate = async () => {
    if (!form().title.trim() || !form().description.trim() || !form().location.trim()) {
      setError("Title, description, and location are required.");
      return;
    }

    setSaving(true);
    setError("");
    setActionMsg("");

    const payload = {
      title: form().title.trim(),
      category: form().category.trim() || undefined,
      description: form().description.trim(),
      location: form().location.trim(),
      job_type: form().job_type,
      salary_min: form().salary_min ? Number(form().salary_min) : undefined,
      salary_max: form().salary_max ? Number(form().salary_max) : undefined,
      experience_years: form().experience_years ? Number(form().experience_years) : undefined,
      skills: form()
        .skills.split(",")
        .map((s) => s.trim())
        .filter(Boolean),
    };

    try {
      const res = await apiFetch("/api/companies/jobs", {
        method: "POST",
        body: JSON.stringify(payload),
      });
      const data = await res.json().catch(() => ({}));
      if (!res.ok) {
        setError(data.error ?? data.message ?? "Failed to create job.");
        return;
      }
      setActionMsg("Job created as draft.");
      closeCreate();
      await loadJobs();
    } catch {
      setError("Network error. Please try again.");
    } finally {
      setSaving(false);
    }
  };

  const submitJob = async (jobId: string) => {
    setBusyJobId(jobId);
    setActionMsg("");
    try {
      const res = await apiFetch(`/api/companies/jobs/${jobId}/submit`, { method: "POST" });
      if (res.ok) {
        setActionMsg("Job submitted for verification.");
        await loadJobs();
      } else {
        const data = await res.json().catch(() => ({}));
        setActionMsg(data.error ?? data.message ?? "Unable to submit this job.");
      }
    } finally {
      setBusyJobId(null);
    }
  };

  const closeJob = async (jobId: string) => {
    setBusyJobId(jobId);
    setActionMsg("");
    try {
      const res = await apiFetch(`/api/companies/jobs/${jobId}/close`, { method: "POST" });
      if (res.ok) {
        setActionMsg("Job closed.");
        await loadJobs();
      } else {
        const data = await res.json().catch(() => ({}));
        setActionMsg(data.error ?? data.message ?? "Unable to close this job.");
      }
    } finally {
      setBusyJobId(null);
    }
  };

  const statusColor = (status: string) => {
    switch (status) {
      case "DRAFT":
        return "#6B7280";
      case "PENDING_APPROVAL":
        return "#F59E0B";
      case "LIVE":
        return "#10B981";
      case "REJECTED":
        return "#EF4444";
      case "CLOSED":
        return "#374151";
      default:
        return "#6B7280";
    }
  };

  return (
    <div style={{ "max-width": "920px" }}>
      <div
        style={{
          display: "flex",
          "justify-content": "space-between",
          "align-items": "center",
          "margin-bottom": "16px",
          gap: "12px",
          "flex-wrap": "wrap",
        }}
      >
        <div>
          <p style={{ margin: "0", "font-size": "18px", "font-weight": "800", color: "#111827" }}>
            Jobs
          </p>
          <p style={{ margin: "4px 0 0", "font-size": "13px", color: "#6B7280" }}>
            Create and manage your job postings.
          </p>
        </div>
        <button type="button" onClick={openCreate} style={BTN_PRIMARY}>
          + Create Job
        </button>
      </div>

      <Show when={actionMsg()}>
        <div
          style={{
            ...CARD,
            "margin-bottom": "14px",
            padding: "12px 14px",
            "font-size": "13px",
            color: "#374151",
          }}
        >
          {actionMsg()}
        </div>
      </Show>

      <Show when={showForm()}>
        <div style={{ ...CARD, "margin-bottom": "16px", border: "1px solid #FF5E13" }}>
          <p
            style={{
              margin: "0 0 14px",
              "font-size": "16px",
              "font-weight": "800",
              color: "#111827",
            }}
          >
            New Job
          </p>
          <div style={{ display: "grid", "grid-template-columns": "1fr 1fr", gap: "12px" }}>
            <div style={{ "grid-column": "span 2" }}>
              <label style={LABEL}>Job Title</label>
              <input
                value={form().title}
                onInput={(e) => setField("title", e.currentTarget.value)}
                style={INPUT}
                placeholder="Frontend Developer"
              />
            </div>
            <div>
              <label style={LABEL}>Category</label>
              <input
                value={form().category}
                onInput={(e) => setField("category", e.currentTarget.value)}
                style={INPUT}
                placeholder="Engineering"
              />
            </div>
            <div>
              <label style={LABEL}>Job Type</label>
              <select
                value={form().job_type}
                onChange={(e) => setField("job_type", e.currentTarget.value)}
                style={INPUT}
              >
                <option value="FULL_TIME">Full Time</option>
                <option value="PART_TIME">Part Time</option>
                <option value="CONTRACT">Contract</option>
              </select>
            </div>
            <div style={{ "grid-column": "span 2" }}>
              <label style={LABEL}>Location</label>
              <input
                value={form().location}
                onInput={(e) => setField("location", e.currentTarget.value)}
                style={INPUT}
                placeholder="Bengaluru (Hybrid)"
              />
            </div>
            <div style={{ "grid-column": "span 2" }}>
              <label style={LABEL}>Description</label>
              <textarea
                rows={4}
                value={form().description}
                onInput={(e) => setField("description", e.currentTarget.value)}
                style={{ ...INPUT, height: "auto", padding: "10px 12px", resize: "vertical" }}
                placeholder="Role overview, responsibilities, and requirements"
              />
            </div>
            <div>
              <label style={LABEL}>Min Salary</label>
              <input
                type="number"
                value={form().salary_min}
                onInput={(e) => setField("salary_min", e.currentTarget.value)}
                style={INPUT}
              />
            </div>
            <div>
              <label style={LABEL}>Max Salary</label>
              <input
                type="number"
                value={form().salary_max}
                onInput={(e) => setField("salary_max", e.currentTarget.value)}
                style={INPUT}
              />
            </div>
            <div>
              <label style={LABEL}>Experience (years)</label>
              <input
                type="number"
                value={form().experience_years}
                onInput={(e) => setField("experience_years", e.currentTarget.value)}
                style={INPUT}
              />
            </div>
            <div>
              <label style={LABEL}>Skills (comma separated)</label>
              <input
                value={form().skills}
                onInput={(e) => setField("skills", e.currentTarget.value)}
                style={INPUT}
                placeholder="Rust, SQL, Docker"
              />
            </div>
          </div>
          <Show when={error()}>
            <p
              style={{
                margin: "12px 0 0",
                "font-size": "13px",
                color: "#EF4444",
                "font-weight": "600",
              }}
            >
              {error()}
            </p>
          </Show>
          <div style={{ display: "flex", gap: "10px", "margin-top": "14px" }}>
            <button
              type="button"
              onClick={handleCreate}
              disabled={saving()}
              style={{ ...BTN_PRIMARY, opacity: saving() ? "0.7" : "1" }}
            >
              {saving() ? "Creating…" : "Create Draft"}
            </button>
            <button type="button" onClick={closeCreate} style={BTN_GHOST}>
              Cancel
            </button>
          </div>
        </div>
      </Show>

      <div style={CARD}>
        <div
          style={{
            display: "flex",
            "justify-content": "space-between",
            "align-items": "center",
            "margin-bottom": "10px",
            gap: "10px",
            "flex-wrap": "wrap",
          }}
        >
          <p style={{ margin: "0", "font-size": "16px", "font-weight": "700", color: "#111827" }}>
            My Job Postings
          </p>
          <button type="button" onClick={loadJobs} style={BTN_GHOST}>
            Refresh
          </button>
        </div>

        <div style={{ display: "grid", gap: "10px" }}>
          <div style={{ display: "grid", "grid-template-columns": "1fr 180px", gap: "10px" }}>
            <input
              value={search()}
              onInput={(e) => setSearch(e.currentTarget.value)}
              style={INPUT}
              placeholder="Search by title, location, type, description, tags"
            />
            <select value={sortBy()} onChange={(e) => setSortBy(e.currentTarget.value as SortKey)} style={INPUT}>
              <option value="newest">Sort: Newest</option>
              <option value="salary_desc">Salary High to Low</option>
              <option value="salary_asc">Salary Low to High</option>
              <option value="title_asc">Title A-Z</option>
            </select>
          </div>
          <Show when={availableTags().length > 0}>
            <div style={{ display: "flex", gap: "6px", "flex-wrap": "wrap" }}>
              <button
                type="button"
                onClick={() => setActiveTag("")}
                style={{ ...BTN_GHOST, height: "28px", padding: "0 10px", "font-size": "11px", ...(activeTag() ? {} : { border: "1px solid #0D0D2A", color: "#0D0D2A" }) }}
              >
                All Tags
              </button>
              <For each={availableTags()}>
                {(tag) => (
                  <button
                    type="button"
                    onClick={() => setActiveTag(tag)}
                    style={{ ...BTN_GHOST, height: "28px", padding: "0 10px", "font-size": "11px", ...(activeTag() === tag ? { border: "1px solid #0D0D2A", color: "#0D0D2A" } : {}) }}
                  >
                    {tag}
                  </button>
                )}
              </For>
            </div>
          </Show>
        </div>
      </div>

      <Show when={loading()}>
        <div style={{ ...CARD, "text-align": "center", color: "#9CA3AF" }}>Loading jobs…</div>
      </Show>

      <Show when={!loading() && filteredSortedJobs().length === 0}>
        <div style={{ ...CARD, "text-align": "center", padding: "34px 24px" }}>
          <p
            style={{
              margin: "0 0 6px",
              "font-size": "16px",
              "font-weight": "700",
              color: "#111827",
            }}
          >
            No jobs found
          </p>
          <p style={{ margin: "0", "font-size": "13px", color: "#6B7280" }}>
            Try a different search or create your first draft job.
          </p>
        </div>
      </Show>

      <Show when={!loading() && filteredSortedJobs().length > 0}>
        <div style={{ display: "grid", gap: "10px" }}>
          <For each={filteredSortedJobs()}>
            {(job) => (
              <div style={{ ...CARD, padding: "16px" }}>
                <div
                  style={{
                    display: "flex",
                    "justify-content": "space-between",
                    gap: "10px",
                    "align-items": "flex-start",
                    "flex-wrap": "wrap",
                  }}
                >
                  <div>
                    <p
                      style={{
                        margin: "0",
                        "font-size": "15px",
                        "font-weight": "800",
                        color: "#111827",
                      }}
                    >
                      {job.title}
                    </p>
                    <p style={{ margin: "3px 0 0", "font-size": "12px", color: "#6B7280" }}>
                      {[job.location, job.job_type, job.category || "General"].join(" • ")}
                    </p>
                  </div>
                  <span
                    style={{
                      display: "inline-flex",
                      "align-items": "center",
                      padding: "0 10px",
                      height: "24px",
                      "border-radius": "999px",
                      background: `${statusColor(job.status)}20`,
                      color: statusColor(job.status),
                      "font-size": "11px",
                      "font-weight": "700",
                    }}
                  >
                    {job.status.replace(/_/g, " ")}
                  </span>
                </div>
                <p
                  style={{
                    margin: "8px 0 0",
                    "font-size": "13px",
                    color: "#374151",
                    "line-height": "1.5",
                  }}
                >
                  {job.description}
                </p>
                <Show when={rowTags(job).length > 0}>
                  <div
                    style={{
                      display: "flex",
                      gap: "6px",
                      "flex-wrap": "wrap",
                      "margin-top": "8px",
                    }}
                  >
                    <For each={rowTags(job).slice(0, 8)}>
                      {(tag) => (
                        <span
                          style={{
                            "font-size": "11px",
                            color: "#4B5563",
                            background: "#F3F4F6",
                            border: "1px solid #E5E7EB",
                            "border-radius": "6px",
                            padding: "2px 8px",
                          }}
                        >
                          {tag}
                        </span>
                      )}
                    </For>
                  </div>
                </Show>
                <div
                  style={{ display: "flex", gap: "8px", "margin-top": "12px", "flex-wrap": "wrap" }}
                >
                  <Show when={job.status === "DRAFT"}>
                    <button
                      type="button"
                      onClick={() => submitJob(job.id)}
                      disabled={busyJobId() === job.id}
                      style={{
                        ...BTN_PRIMARY,
                        height: "32px",
                        "font-size": "12px",
                        padding: "0 14px",
                        opacity: busyJobId() === job.id ? "0.65" : "1",
                      }}
                    >
                      Submit for Approval
                    </button>
                  </Show>
                  <Show when={job.status !== "CLOSED"}>
                    <button
                      type="button"
                      onClick={() => closeJob(job.id)}
                      disabled={busyJobId() === job.id}
                      style={{
                        ...BTN_GHOST,
                        height: "32px",
                        "font-size": "12px",
                        padding: "0 14px",
                        opacity: busyJobId() === job.id ? "0.65" : "1",
                      }}
                    >
                      Close Job
                    </button>
                  </Show>
                </div>
              </div>
            )}
          </For>
        </div>
      </Show>
    </div>
  );
}