First pass at schema for next-gen Teams

sql/branch.sql

@@ -0,0 +1,84 @@
+BEGIN;
+
+    -- teams - the entity that can receive payments and distribute payroll
+    CREATE TABLE teams
+    ( slug                  text                        PRIMARY KEY
+    , id                    bigserial                   NOT NULL UNIQUE
+    , ctime                 timestamp with time zone    NOT NULL DEFAULT CURRENT_TIMESTAMP
+    , display_name          text                        NOT NULL
+    , slug_lower            text                        NOT NULL UNIQUE
+    , homepage              text                        NOT NULL
+    , product_or_service    text                        NOT NULL
+    , getting_involved      text                        NOT NULL
+    , getting_paid          text                        NOT NULL
+    , owner                 text                        NOT NULL REFERENCES participants
+                                                            ON UPDATE CASCADE ON DELETE RESTRICT
+    , is_approved           boolean                     DEFAULT NULL
+    , nsupporters           integer                     NOT NULL DEFAULT 0
+    , receiving             numeric(35,2)               NOT NULL DEFAULT 0
+    , payroll               numeric(35,2)               NOT NULL DEFAULT 0
+     );
+
+
+    -- subscriptions - recurring payments from a participant to a team
+    CREATE TABLE subscriptions
+    ( id                    serial                      PRIMARY KEY
+    , ctime                 timestamp with time zone    NOT NULL
+    , mtime                 timestamp with time zone    NOT NULL DEFAULT CURRENT_TIMESTAMP
+    , subscriber            text                        NOT NULL REFERENCES participants
+                                                            ON UPDATE CASCADE ON DELETE RESTRICT
+    , team                  text                        NOT NULL REFERENCES teams
+                                                            ON UPDATE CASCADE ON DELETE RESTRICT
+    , amount                numeric(35,2)               NOT NULL
+    , is_funded             boolean                     NOT NULL DEFAULT false
+     );
+
+    CREATE INDEX subscriptions_all ON subscriptions USING btree (subscriber, team, mtime DESC);
+
+    CREATE VIEW current_subscriptions AS
+        SELECT DISTINCT ON (subscriber, team) *
+          FROM subscriptions
+      ORDER BY subscriber, team, mtime DESC;
+
+    -- Allow updating is_funded via the current_subscriptions view for convenience
+    CREATE FUNCTION update_subscription() RETURNS trigger AS $$
+        BEGIN
+            UPDATE subscriptions
+               SET is_funded = NEW.is_funded
+             WHERE id = NEW.id;
+            RETURN NULL;
+        END;
+    $$ LANGUAGE plpgsql;
+
+    CREATE TRIGGER update_current_subscription INSTEAD OF UPDATE ON current_subscriptions
+        FOR EACH ROW EXECUTE PROCEDURE update_subscription();
+
+
+    -- payroll - recurring payments from a team to participant
+    CREATE TABLE payroll
+    ( id                serial                      PRIMARY KEY
+    , ctime             timestamp with time zone    NOT NULL
+    , mtime             timestamp with time zone    NOT NULL
+                                                    DEFAULT CURRENT_TIMESTAMP
+    , recipient         text                        NOT NULL REFERENCES participants
+                                                        ON UPDATE CASCADE ON DELETE RESTRICT
+    , team              text                        NOT NULL REFERENCES teams
+                                                        ON UPDATE CASCADE ON DELETE RESTRICT
+    , amount            numeric(35,2)               NOT NULL DEFAULT 0.0
+    , recorder          text                        NOT NULL REFERENCES participants
+                                                        ON UPDATE CASCADE ON DELETE RESTRICT
+    , CONSTRAINT not_negative CHECK ((amount >= (0)::numeric))
+     );
+
+    CREATE VIEW current_payroll AS
+        SELECT * FROM (
+             SELECT DISTINCT ON (recipient, team) payroll.*
+               FROM payroll
+               JOIN participants p ON p.username = payroll.recipient
+              WHERE p.is_suspicious IS NOT TRUE
+           ORDER BY recipient
+                  , team
+                  , mtime DESC
+        ) AS anon WHERE amount > 0;
+
+END;