142 lines
5.4 KiB
Elixir
142 lines
5.4 KiB
Elixir
defmodule Mv.Repo.Migrations.AddMembershipFeesTables do
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@moduledoc """
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Updates resources based on their most recent snapshots.
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This file was autogenerated with `mix ash_postgres.generate_migrations`
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"""
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use Ecto.Migration
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def up do
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create table(:membership_fee_types, primary_key: false) do
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add :id, :uuid, null: false, default: fragment("uuid_generate_v7()"), primary_key: true
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add :name, :text, null: false
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# Precision: 10 digits total, 2 decimal places (max 99,999,999.99)
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add :amount, :numeric, null: false, precision: 10, scale: 2
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add :interval, :text, null: false
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add :description, :text
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end
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create unique_index(:membership_fee_types, [:name],
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name: "membership_fee_types_unique_name_index"
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)
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# CHECK constraint for interval values (enforced at DB level)
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create constraint(:membership_fee_types, :membership_fee_types_interval_check,
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check: "interval IN ('monthly', 'quarterly', 'half_yearly', 'yearly')"
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)
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# CHECK constraint for non-negative amount
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create constraint(:membership_fee_types, :membership_fee_types_amount_check,
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check: "amount >= 0"
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)
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create table(:membership_fee_cycles, primary_key: false) do
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add :id, :uuid, null: false, default: fragment("uuid_generate_v7()"), primary_key: true
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add :cycle_start, :date, null: false
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# Precision: 10 digits total, 2 decimal places (max 99,999,999.99)
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add :amount, :numeric, null: false, precision: 10, scale: 2
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add :status, :text, null: false, default: "unpaid"
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add :notes, :text
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# CASCADE: Delete cycles when member is deleted
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add :member_id,
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references(:members,
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column: :id,
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name: "membership_fee_cycles_member_id_fkey",
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type: :uuid,
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prefix: "public",
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on_delete: :delete_all
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),
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null: false
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# RESTRICT: Cannot delete fee type if cycles reference it
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add :membership_fee_type_id,
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references(:membership_fee_types,
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column: :id,
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name: "membership_fee_cycles_membership_fee_type_id_fkey",
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type: :uuid,
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prefix: "public",
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on_delete: :restrict
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),
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null: false
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end
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# CHECK constraint for status values (enforced at DB level)
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create constraint(:membership_fee_cycles, :membership_fee_cycles_status_check,
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check: "status IN ('unpaid', 'paid', 'suspended')"
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)
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# CHECK constraint for non-negative amount
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create constraint(:membership_fee_cycles, :membership_fee_cycles_amount_check,
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check: "amount >= 0"
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)
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# Indexes as specified in architecture document
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create index(:membership_fee_cycles, [:member_id])
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create index(:membership_fee_cycles, [:membership_fee_type_id])
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create index(:membership_fee_cycles, [:status])
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create index(:membership_fee_cycles, [:cycle_start])
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# Composite unique index: one cycle per member per cycle_start
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create unique_index(:membership_fee_cycles, [:member_id, :cycle_start],
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name: "membership_fee_cycles_unique_cycle_per_member_index"
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)
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# Extend members table with membership fee fields
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alter table(:members) do
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add :membership_fee_start_date, :date
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# RESTRICT: Cannot delete fee type if members are assigned to it
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add :membership_fee_type_id,
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references(:membership_fee_types,
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column: :id,
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name: "members_membership_fee_type_id_fkey",
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type: :uuid,
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prefix: "public",
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on_delete: :restrict
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)
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end
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# Index for efficient lookup of members by fee type
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create index(:members, [:membership_fee_type_id])
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end
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def down do
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# First: Remove members extension (depends on membership_fee_types)
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drop_if_exists index(:members, [:membership_fee_type_id])
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drop constraint(:members, "members_membership_fee_type_id_fkey")
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alter table(:members) do
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remove :membership_fee_type_id
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remove :membership_fee_start_date
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end
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# Second: Drop cycles table (depends on membership_fee_types)
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drop_if_exists unique_index(:membership_fee_cycles, [:member_id, :cycle_start],
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name: "membership_fee_cycles_unique_cycle_per_member_index"
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)
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drop_if_exists index(:membership_fee_cycles, [:cycle_start])
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drop_if_exists index(:membership_fee_cycles, [:status])
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drop_if_exists index(:membership_fee_cycles, [:membership_fee_type_id])
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drop_if_exists index(:membership_fee_cycles, [:member_id])
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drop constraint(:membership_fee_cycles, "membership_fee_cycles_member_id_fkey")
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drop constraint(:membership_fee_cycles, "membership_fee_cycles_membership_fee_type_id_fkey")
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drop_if_exists constraint(:membership_fee_cycles, :membership_fee_cycles_status_check)
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drop_if_exists constraint(:membership_fee_cycles, :membership_fee_cycles_amount_check)
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drop table(:membership_fee_cycles)
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# Third: Drop fee types table
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drop_if_exists unique_index(:membership_fee_types, [:name],
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name: "membership_fee_types_unique_name_index"
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)
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drop_if_exists constraint(:membership_fee_types, :membership_fee_types_interval_check)
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drop_if_exists constraint(:membership_fee_types, :membership_fee_types_amount_check)
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drop table(:membership_fee_types)
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end
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end
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