From 95c25142f016962445b32407d072e39cbfed1adf Mon Sep 17 00:00:00 2001
From: Simon <s.thiessen@local-it.org>
Date: Thu, 16 Jul 2026 09:39:12 +0200
Subject: [PATCH] feat(seeds): add an opt-in bulk member seed for load testing

---
 Justfile                         |   5 ++
 priv/repo/seeds_bulk_members.exs | 129 +++++++++++++++++++++++++++++++
 2 files changed, 134 insertions(+)
 create mode 100644 priv/repo/seeds_bulk_members.exs

diff --git a/Justfile b/Justfile
index a16bf8b1..9a16e966 100644
--- a/Justfile
+++ b/Justfile
@@ -30,6 +30,11 @@ reset-database:
 seed-database:
     mix run priv/repo/seeds.exs
 
+# Seed a large batch of members for load / infinite-scroll testing (opt-in; NOT
+# part of `seed-database`). Set BULK_MEMBER_COUNT to change the count (default 300).
+seed-members-bulk:
+    mix run priv/repo/seeds_bulk_members.exs
+
 start-database:
     docker compose up -d
 
diff --git a/priv/repo/seeds_bulk_members.exs b/priv/repo/seeds_bulk_members.exs
new file mode 100644
index 00000000..cf508fe0
--- /dev/null
+++ b/priv/repo/seeds_bulk_members.exs
@@ -0,0 +1,129 @@
+# Optional BULK member seed for load / infinite-scroll testing.
+#
+# This is NOT part of the default dev seed (`mix run priv/repo/seeds.exs`), so the
+# normal dev database stays small. Run it explicitly when you need many members:
+#
+#     just seed-members-bulk
+#     BULK_MEMBER_COUNT=500 mix run priv/repo/seeds_bulk_members.exs
+#
+# Requires the bootstrap seeds (admin user + fee types) to have run first. Members
+# are upserted by email ("bulk-member-<n>@example.de"), so re-running is idempotent
+# and does not duplicate members or their fee cycles.
+
+alias Mv.Accounts
+alias Mv.Membership
+alias Mv.MembershipFees.CycleGenerator
+alias Mv.MembershipFees.MembershipFeeType
+
+require Ash.Query
+
+admin_email = System.get_env("ADMIN_EMAIL") || "admin@localhost"
+
+admin_user_with_role =
+  case Accounts.User
+       |> Ash.Query.filter(email == ^admin_email)
+       |> Ash.read_one(domain: Mv.Accounts, authorize?: false) do
+    {:ok, user} when not is_nil(user) ->
+      user |> Ash.load!(:role, authorize?: false)
+
+    _ ->
+      raise "Bulk seed requires bootstrap: admin user not found (#{admin_email})"
+  end
+
+all_fee_types =
+  MembershipFeeType
+  |> Ash.Query.sort(name: :asc)
+  |> Ash.read!(actor: admin_user_with_role, domain: Mv.MembershipFees)
+  |> Enum.to_list()
+
+count =
+  case Integer.parse(System.get_env("BULK_MEMBER_COUNT") || "300") do
+    {n, _} when n > 0 -> n
+    _ -> 300
+  end
+
+first_names =
+  ~w(Anna Bruno Clara David Elena Felix Greta Henrik Ines Jakob Laura Max Nina
+     Oliver Paula Quirin Rosa Stefan Thea Uwe Vera Wolf Xenia Yannick Zoe Ada
+     Ben Carl Dora Emil)
+
+last_names =
+  ~w(Schmidt Müller Fischer Weber Wagner Becker Schulz Hoffmann Koch Richter Klein
+     Wolf Neumann Schwarz Zimmermann Braun Krüger Hartmann Lange Werner Krause
+     Lehmann Köhler Herrmann Walter)
+
+cities = [
+  {"München", "80331"},
+  {"Hamburg", "20095"},
+  {"Berlin", "10435"},
+  {"Köln", "50667"},
+  {"Frankfurt", "60313"},
+  {"Stuttgart", "70173"},
+  {"Düsseldorf", "40212"},
+  {"Dortmund", "44137"},
+  {"Essen", "45127"},
+  {"Dresden", "01069"},
+  {"Nürnberg", "90402"},
+  {"Bremen", "28195"}
+]
+
+statuses = [:paid, :unpaid, :suspended]
+
+IO.puts("Seeding #{count} bulk members (set BULK_MEMBER_COUNT to change)…")
+
+Enum.each(1..count, fn i ->
+  {city, postal_code} = Enum.at(cities, rem(i, length(cities)))
+
+  attrs = %{
+    first_name: Enum.at(first_names, rem(i, length(first_names))),
+    last_name: Enum.at(last_names, rem(div(i, length(first_names)) + i, length(last_names))),
+    email: "bulk-member-#{i}@example.de",
+    join_date: Date.add(~D[2020-01-01], rem(i * 7, 2000)),
+    city: city,
+    street: "Teststraße",
+    house_number: Integer.to_string(rem(i, 200) + 1),
+    postal_code: postal_code,
+    country: "Deutschland"
+  }
+
+  attrs =
+    case all_fee_types do
+      [] -> attrs
+      types -> Map.put(attrs, :membership_fee_type_id, Enum.at(types, rem(i, length(types))).id)
+    end
+
+  member =
+    Membership.create_member!(attrs,
+      upsert?: true,
+      upsert_identity: :unique_email,
+      actor: admin_user_with_role
+    )
+
+  # Give the member fee cycles + a round-robin status so the fee-status column is
+  # populated at scale. Only generate when none exist yet (idempotent re-runs).
+  if not is_nil(member.membership_fee_type_id) do
+    member = Ash.load!(member, :membership_fee_cycles, actor: admin_user_with_role)
+
+    if Enum.empty?(member.membership_fee_cycles) do
+      {:ok, cycles, _} =
+        CycleGenerator.generate_cycles_for_member(member.id,
+          skip_lock?: true,
+          actor: admin_user_with_role
+        )
+
+      status = Enum.at(statuses, rem(i, length(statuses)))
+
+      Enum.each(cycles, fn cycle ->
+        if cycle.status != status do
+          cycle
+          |> Ash.Changeset.for_update(:update, %{status: status})
+          |> Ash.update!(actor: admin_user_with_role, domain: Mv.MembershipFees)
+        end
+      end)
+    end
+  end
+
+  if rem(i, 50) == 0, do: IO.puts("  … #{i}/#{count}")
+end)
+
+IO.puts("✅ Bulk seed complete: #{count} members.")