Publish curated VacatureRadar source snapshot

apps/jobs/services/employer_intelligence.py

@@ -0,0 +1,86 @@
+from __future__ import annotations
+
+from typing import Any
+
+from django.db.models import Avg, Count, Max, Q, QuerySet
+
+from apps.profiles.models import SearchProfile
+from apps.sources.models import Source
+
+from ..models import Application, Employer, JobPosting, ScoreRun
+from .cockpit import annotate_latest_profile_score
+from .relevance import it_relevance_query
+
+
+def employer_index_queryset(*, user, profile: SearchProfile | None) -> QuerySet[Employer]:
+    score_filter = Q(jobs__scores__profile=profile) if profile else Q(pk__isnull=True)
+    return Employer.objects.annotate(
+        active_vacancies=Count(
+            "jobs", filter=Q(jobs__status=JobPosting.Status.ACTIVE), distinct=True
+        ),
+        relevant_vacancies=Count(
+            "jobs",
+            filter=Q(jobs__status=JobPosting.Status.ACTIVE) & it_relevance_query("jobs__"),
+            distinct=True,
+        ),
+        previous_applications=Count(
+            "jobs__applications",
+            filter=Q(jobs__applications__user=user),
+            distinct=True,
+        ),
+        source_count=Count("jobs__source_aliases__source", distinct=True),
+        latest_job_at=Max("jobs__first_seen"),
+        average_match=Avg("jobs__scores__score", filter=score_filter),
+    )
+
+
+def filter_employers(
+    queryset: QuerySet[Employer], *, query: str = "", channel: str = "", active_only: bool = False
+) -> QuerySet[Employer]:
+    if query.strip():
+        queryset = queryset.filter(
+            Q(name__icontains=query.strip())
+            | Q(domain__icontains=query.strip())
+            | Q(jobs__raw_location__icontains=query.strip())
+        )
+    if channel == "direct":
+        queryset = queryset.filter(is_direct_employer=True, is_recruiter=False)
+    elif channel == "recruiter":
+        queryset = queryset.filter(is_recruiter=True)
+    if active_only:
+        queryset = queryset.filter(active_vacancies__gt=0)
+    return queryset.order_by("-relevant_vacancies", "-active_vacancies", "name").distinct()
+
+
+def build_employer_detail(
+    *, employer: Employer, user, profile: SearchProfile | None
+) -> dict[str, Any]:
+    jobs = annotate_latest_profile_score(
+        employer.jobs.select_related("employer").all(), profile
+    ).order_by("-first_seen")
+    sources = Source.objects.filter(job_aliases__job__employer=employer).distinct().order_by("name")
+    locations = list(
+        employer.jobs.exclude(raw_location="")
+        .order_by("raw_location")
+        .values_list("raw_location", flat=True)
+        .distinct()[:8]
+    )
+    return {
+        "employer": employer,
+        "recent_jobs": list(jobs[:12]),
+        "active_jobs": list(jobs.filter(status=JobPosting.Status.ACTIVE)[:8]),
+        "applications": list(
+            Application.objects.filter(user=user, job__employer=employer)
+            .select_related("job")
+            .order_by("-updated_at")[:8]
+        ),
+        "sources": list(sources[:10]),
+        "locations": locations,
+        "match_history": list(
+            ScoreRun.objects.filter(profile=profile, job__employer=employer)
+            .select_related("job")
+            .order_by("-created_at")[:20]
+        )
+        if profile
+        else [],
+    }