# Script for populating the database. You can run it as:
#
#     mix run priv/repo/seeds.exs
#

alias Mv.Membership
alias Mv.Accounts

for attrs <- [
      # Basic example fields (for testing)
      %{
        name: "String Field",
        value_type: :string,
        description: "Example for a field of type string",
        immutable: true,
        required: false
      },
      %{
        name: "Date Field",
        value_type: :date,
        description: "Example for a field of type date",
        immutable: true,
        required: false
      },
      %{
        name: "Boolean Field",
        value_type: :boolean,
        description: "Example for a field of type boolean",
        immutable: true,
        required: false
      },
      %{
        name: "Email Field",
        value_type: :email,
        description: "Example for a field of type email",
        immutable: true,
        required: false
      },
      # Realistic custom fields
      %{
        name: "Membership Number",
        value_type: :string,
        description: "Unique membership identification number",
        immutable: false,
        required: false
      },
      %{
        name: "Emergency Contact",
        value_type: :string,
        description: "Emergency contact person name and phone",
        immutable: false,
        required: false
      },
      %{
        name: "T-Shirt Size",
        value_type: :string,
        description: "T-Shirt size for events (XS, S, M, L, XL, XXL)",
        immutable: false,
        required: false
      },
      %{
        name: "Newsletter Subscription",
        value_type: :boolean,
        description: "Whether member wants to receive newsletter",
        immutable: false,
        required: false
      },
      %{
        name: "Date of Last Medical Check",
        value_type: :date,
        description: "Date of last medical examination",
        immutable: false,
        required: false
      },
      %{
        name: "Secondary Email",
        value_type: :email,
        description: "Alternative email address",
        immutable: false,
        required: false
      },
      %{
        name: "Membership Type",
        value_type: :string,
        description: "Type of membership (e.g., Regular, Student, Senior)",
        immutable: false,
        required: false
      },
      %{
        name: "Parking Permit",
        value_type: :boolean,
        description: "Whether member has parking permit",
        immutable: false,
        required: false
      }
    ] do
  Membership.create_custom_field!(
    attrs,
    upsert?: true,
    upsert_identity: :unique_name
  )
end

# Create admin user for testing
Accounts.create_user!(%{email: "admin@mv.local"}, upsert?: true, upsert_identity: :unique_email)
|> Ash.Changeset.for_update(:admin_set_password, %{password: "testpassword"})
|> Ash.update!()

# Create sample members for testing - use upsert to prevent duplicates
for member_attrs <- [
      %{
        first_name: "Hans",
        last_name: "Müller",
        email: "hans.mueller@example.de",
        birth_date: ~D[1985-06-15],
        join_date: ~D[2023-01-15],
        paid: true,
        phone_number: "+49301234567",
        city: "München",
        street: "Hauptstraße",
        house_number: "42",
        postal_code: "80331"
      },
      %{
        first_name: "Greta",
        last_name: "Schmidt",
        email: "greta.schmidt@example.de",
        birth_date: ~D[1990-03-22],
        join_date: ~D[2023-02-01],
        paid: false,
        phone_number: "+49309876543",
        city: "Hamburg",
        street: "Lindenstraße",
        house_number: "17",
        postal_code: "20095",
        notes: "Interessiert an Fortgeschrittenen-Kursen"
      },
      %{
        first_name: "Friedrich",
        last_name: "Wagner",
        email: "friedrich.wagner@example.de",
        birth_date: ~D[1978-11-08],
        join_date: ~D[2022-11-10],
        paid: true,
        phone_number: "+49301122334",
        city: "Berlin",
        street: "Kastanienallee",
        house_number: "8"
      },
      %{
        first_name: "Marianne",
        last_name: "Wagner",
        email: "marianne.wagner@example.de",
        birth_date: ~D[1978-11-08],
        join_date: ~D[2022-11-10],
        paid: true,
        phone_number: "+49301122334",
        city: "Berlin",
        street: "Kastanienallee",
        house_number: "8"
      }
    ] do
  # Use upsert to prevent duplicates based on email
  Membership.create_member!(member_attrs, upsert?: true, upsert_identity: :unique_email)
end

# Create additional users for user-member linking examples
additional_users = [
  %{email: "hans.mueller@example.de"},
  %{email: "greta.schmidt@example.de"},
  %{email: "maria.weber@example.de"},
  %{email: "thomas.klein@example.de"}
]

created_users =
  Enum.map(additional_users, fn user_attrs ->
    Accounts.create_user!(user_attrs, upsert?: true, upsert_identity: :unique_email)
    |> Ash.Changeset.for_update(:admin_set_password, %{password: "testpassword"})
    |> Ash.update!()
  end)

# Create members with linked users to demonstrate the 1:1 relationship
# Only create if users don't already have members
linked_members = [
  %{
    first_name: "Maria",
    last_name: "Weber",
    email: "maria.weber@example.de",
    birth_date: ~D[1992-07-14],
    join_date: ~D[2023-03-15],
    paid: true,
    phone_number: "+49301357924",
    city: "Frankfurt",
    street: "Goetheplatz",
    house_number: "5",
    postal_code: "60313",
    notes: "Linked to user account",
    # Link to the third user (maria.weber@example.de)
    user: Enum.at(created_users, 2)
  },
  %{
    first_name: "Thomas",
    last_name: "Klein",
    email: "thomas.klein@example.de",
    birth_date: ~D[1988-12-03],
    join_date: ~D[2023-04-01],
    paid: false,
    phone_number: "+49302468135",
    city: "Köln",
    street: "Rheinstraße",
    house_number: "23",
    postal_code: "50667",
    notes: "Linked to user account - needs payment follow-up",
    # Link to the fourth user (thomas.klein@example.de)
    user: Enum.at(created_users, 3)
  }
]

# Create the linked members - use upsert to prevent duplicates
Enum.each(linked_members, fn member_attrs ->
  user = member_attrs.user
  member_attrs_without_user = Map.delete(member_attrs, :user)

  # Check if user already has a member
  if user.member_id == nil do
    # User is free, create member and link - use upsert to prevent duplicates
    Membership.create_member!(
      Map.put(member_attrs_without_user, :user, %{id: user.id}),
      upsert?: true,
      upsert_identity: :unique_email
    )
  else
    # User already has a member, just create the member without linking - use upsert to prevent duplicates
    Membership.create_member!(member_attrs_without_user,
      upsert?: true,
      upsert_identity: :unique_email
    )
  end
end)

# Create sample custom field values for some members
all_members = Ash.read!(Membership.Member)
all_custom_fields = Ash.read!(Membership.CustomField)

# Helper function to find custom field by name
find_field = fn name -> Enum.find(all_custom_fields, &(&1.name == name)) end
find_member = fn email -> Enum.find(all_members, &(&1.email == email)) end

# Add custom field values for Hans Müller
if hans = find_member.("hans.mueller@example.de") do
  [
    {find_field.("Membership Number"),
     %{"_union_type" => "string", "_union_value" => "M-2023-001"}},
    {find_field.("T-Shirt Size"), %{"_union_type" => "string", "_union_value" => "L"}},
    {find_field.("Newsletter Subscription"),
     %{"_union_type" => "boolean", "_union_value" => true}},
    {find_field.("Membership Type"), %{"_union_type" => "string", "_union_value" => "Regular"}},
    {find_field.("Parking Permit"), %{"_union_type" => "boolean", "_union_value" => true}},
    {find_field.("Secondary Email"),
     %{"_union_type" => "email", "_union_value" => "hans.m@private.de"}}
  ]
  |> Enum.each(fn {field, value} ->
    if field do
      Membership.CustomFieldValue
      |> Ash.Changeset.for_create(:create, %{
        member_id: hans.id,
        custom_field_id: field.id,
        value: value
      })
      |> Ash.create!(upsert?: true, upsert_identity: :unique_custom_field_per_member)
    end
  end)
end

# Add custom field values for Greta Schmidt
if greta = find_member.("greta.schmidt@example.de") do
  [
    {find_field.("Membership Number"),
     %{"_union_type" => "string", "_union_value" => "M-2023-015"}},
    {find_field.("T-Shirt Size"), %{"_union_type" => "string", "_union_value" => "M"}},
    {find_field.("Newsletter Subscription"),
     %{"_union_type" => "boolean", "_union_value" => true}},
    {find_field.("Membership Type"), %{"_union_type" => "string", "_union_value" => "Student"}},
    {find_field.("Emergency Contact"),
     %{"_union_type" => "string", "_union_value" => "Anna Schmidt, +49301234567"}}
  ]
  |> Enum.each(fn {field, value} ->
    if field do
      Membership.CustomFieldValue
      |> Ash.Changeset.for_create(:create, %{
        member_id: greta.id,
        custom_field_id: field.id,
        value: value
      })
      |> Ash.create!(upsert?: true, upsert_identity: :unique_custom_field_per_member)
    end
  end)
end

# Add custom field values for Friedrich Wagner
if friedrich = find_member.("friedrich.wagner@example.de") do
  [
    {find_field.("Membership Number"),
     %{"_union_type" => "string", "_union_value" => "M-2022-042"}},
    {find_field.("T-Shirt Size"), %{"_union_type" => "string", "_union_value" => "XL"}},
    {find_field.("Newsletter Subscription"),
     %{"_union_type" => "boolean", "_union_value" => false}},
    {find_field.("Membership Type"), %{"_union_type" => "string", "_union_value" => "Senior"}},
    {find_field.("Parking Permit"), %{"_union_type" => "boolean", "_union_value" => false}},
    {find_field.("Date of Last Medical Check"),
     %{"_union_type" => "date", "_union_value" => ~D[2024-03-15]}}
  ]
  |> Enum.each(fn {field, value} ->
    if field do
      Membership.CustomFieldValue
      |> Ash.Changeset.for_create(:create, %{
        member_id: friedrich.id,
        custom_field_id: field.id,
        value: value
      })
      |> Ash.create!(upsert?: true, upsert_identity: :unique_custom_field_per_member)
    end
  end)
end

# Create or update global settings (singleton)
default_club_name = System.get_env("ASSOCIATION_NAME") || "Club Name"

case Membership.get_settings() do
  {:ok, existing_settings} ->
    # Settings exist, update if club_name is different from env var
    if existing_settings.club_name != default_club_name do
      {:ok, _updated} =
        Membership.update_settings(existing_settings, %{club_name: default_club_name})
    end
end

IO.puts("✅ Seeds completed successfully!")
IO.puts("📝 Created sample data:")
IO.puts("   - Global settings: club_name = #{default_club_name}")
IO.puts("   - Custom fields: 12 fields (String, Date, Boolean, Email, + 8 realistic fields)")
IO.puts("   - Admin user: admin@mv.local (password: testpassword)")
IO.puts("   - Sample members: Hans, Greta, Friedrich")

IO.puts(
  "   - Additional users: hans.mueller@example.de, greta.schmidt@example.de, maria.weber@example.de, thomas.klein@example.de"
)

IO.puts(
  "   - Linked members: Maria Weber ↔ maria.weber@example.de, Thomas Klein ↔ thomas.klein@example.de"
)

IO.puts(
  "   - Custom field values: Sample data for Hans (6 fields), Greta (5 fields), Friedrich (6 fields)"
)

IO.puts("🔗 Visit the application to see user-member relationships and custom fields in action!")