.

migrations/20250510183101_uuidv7.down.sql

@@ -0,0 +1 @@
+DROP EXTENSION pg_uuidv7;

migrations/20250510183101_uuidv7.up.sql

@@ -0,0 +1 @@
+CREATE EXTENSION IF NOT EXISTS pg_uuidv7;

migrations/20250510183102_user.down.sql

@@ -0,0 +1,4 @@
+DROP TRIGGER trg_user_relation_update ON "user_relation";
+DROP FUNCTION fn_on_user_relation_update();
+DROP TABLE "user_relation";
+DROP TABLE "user";

migrations/20250510183102_user.up.sql

@@ -0,0 +1,46 @@
+CREATE TABLE IF NOT EXISTS "user"
+(
+    "id"            UUID    NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "avatar_url"    VARCHAR,
+    "username"      VARCHAR NOT NULL UNIQUE,
+    "display_name"  VARCHAR,
+    "email"         VARCHAR NOT NULL,
+    "password_hash" VARCHAR NOT NULL,
+    "bot"           BOOLEAN NOT NULL             DEFAULT FALSE,
+    "system"        BOOLEAN NOT NULL             DEFAULT FALSE,
+    "settings"      JSONB   NOT NULL             DEFAULT '{}'::JSONB
+);
+
+CREATE TABLE IF NOT EXISTS "user_relation"
+(
+    "user_id"    UUID        NOT NULL CHECK (user_id <> other_id) REFERENCES "user" ("id") ON DELETE CASCADE,
+    "other_id"   UUID        NOT NULL CHECK (user_id <> other_id) REFERENCES "user" ("id") ON DELETE CASCADE,
+    "type"       INT2        NOT NULL,
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT now(),
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY ("user_id", "other_id")
+);
+
+-- create system account
+INSERT INTO "user" ("username", "display_name", "email", "password_hash", "bot", "system")
+VALUES ('system', 'System', 'system@lionarius.ru', '', TRUE, TRUE);
+
+CREATE OR REPLACE FUNCTION fn_on_user_relation_update()
+    RETURNS TRIGGER
+    LANGUAGE plpgsql
+AS
+$$
+BEGIN
+    IF (TG_OP = 'UPDATE') THEN
+        NEW.updated_at := now();
+    END IF;
+
+    RETURN NEW;
+END;
+$$;
+
+CREATE TRIGGER trg_user_relation_update
+    BEFORE UPDATE
+    ON "user_relation"
+    FOR EACH ROW
+EXECUTE FUNCTION fn_on_user_relation_update();

migrations/20250510183125_server.down.sql

@@ -0,0 +1 @@
+DROP TABLE "server";

migrations/20250510183125_server.up.sql

@@ -0,0 +1,77 @@
+CREATE TABLE IF NOT EXISTS "server"
+(
+    "id"       UUID    NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "owner_id" UUID    NOT NULL REFERENCES "user" ("id"),
+    "name"     VARCHAR NOT NULL,
+    "icon_url" VARCHAR
+);
+
+CREATE TABLE IF NOT EXISTS "server_role"
+(
+    "id"          UUID     NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "server_id"   UUID     NOT NULL REFERENCES "server" ("id") ON DELETE CASCADE,
+    "name"        VARCHAR  NOT NULL,
+    "color"       VARCHAR,
+    "display"     BOOLEAN  NOT NULL             DEFAULT FALSE,
+    "permissions" JSONB    NOT NULL             DEFAULT '{}'::JSONB,
+    "position"    SMALLINT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "server_member"
+(
+    "id"         UUID NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "server_id"  UUID NOT NULL REFERENCES "server" ("id") ON DELETE CASCADE,
+    "user_id"    UUID NOT NULL REFERENCES "user" ("id") ON DELETE CASCADE,
+    "nickname"   VARCHAR,
+    "avatar_url" VARCHAR,
+    UNIQUE ("server_id", "user_id")
+);
+
+CREATE TABLE IF NOT EXISTS "server_member_role"
+(
+    "member_id" UUID NOT NULL REFERENCES "server_member" ("id") ON DELETE CASCADE,
+    "role_id"   UUID NOT NULL REFERENCES "server_role" ("id") ON DELETE CASCADE,
+    PRIMARY KEY ("member_id", "role_id")
+);
+
+CREATE TABLE IF NOT EXISTS "server_invite"
+(
+    "code"       VARCHAR NOT NULL PRIMARY KEY,
+    "server_id"  UUID    NOT NULL REFERENCES "server" ("id") ON DELETE CASCADE,
+    "inviter_id" UUID    REFERENCES "user" ("id") ON DELETE SET NULL,
+    "expires_at" TIMESTAMPTZ
+);
+
+CREATE OR REPLACE FUNCTION check_server_user_role_server_id()
+    RETURNS TRIGGER AS
+$$
+DECLARE
+    member_server_id UUID;
+    role_server_id   UUID;
+BEGIN
+    -- Get server_id from server_user
+    SELECT server_id
+    INTO member_server_id
+    FROM server_member
+    WHERE id = NEW.member_id;
+
+    -- Get server_id from server_role
+    SELECT server_id
+    INTO role_server_id
+    FROM server_role
+    WHERE id = NEW.role_id;
+
+    -- Check if server_ids match
+    IF member_server_id != role_server_id THEN
+        RAISE EXCEPTION 'Cannot assign role from a different server: server_user server_id (%) does not match server_role server_id (%)', member_server_id, role_server_id;
+    END IF;
+
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER enforce_server_user_role_server_id
+    BEFORE INSERT OR UPDATE
+    ON server_member_role
+    FOR EACH ROW
+EXECUTE FUNCTION check_server_user_role_server_id();

migrations/20250510184011_channel_message.down.sql

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+DROP TABLE "message";
+DROP TABLE "channel";

migrations/20250510184011_channel_message.up.sql

@@ -0,0 +1,97 @@
+CREATE TABLE IF NOT EXISTS "channel"
+(
+    "id"        UUID    NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "name"      VARCHAR NOT NULL,
+    "type"      INT2    NOT NULL,
+    "position"  INT2    NOT NULL,
+    "server_id" UUID REFERENCES "server" ("id") ON DELETE CASCADE,      -- only for server channels
+    "parent"    UUID    REFERENCES "channel" ("id") ON DELETE SET NULL, -- only for server channels
+    "owner_id"  UUID    REFERENCES "user" ("id") ON DELETE SET NULL     -- only for group channels
+);
+
+-- only for dm or group channels
+CREATE TABLE IF NOT EXISTS "channel_recipient"
+(
+    "channel_id" UUID NOT NULL REFERENCES "channel" ("id") ON DELETE CASCADE,
+    "user_id"    UUID NOT NULL REFERENCES "user" ("id") ON DELETE CASCADE,
+    PRIMARY KEY ("channel_id", "user_id")
+);
+
+CREATE TABLE IF NOT EXISTS "message"
+(
+    "id"         UUID NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "author_id"  UUID NOT NULL REFERENCES "user" ("id"),
+    "channel_id" UUID NOT NULL REFERENCES "channel" ("id"),
+    "content"    TEXT NOT NULL
+);
+
+ALTER TABLE "channel"
+    ADD COLUMN "last_message_id" UUID REFERENCES "message" ("id") ON DELETE SET NULL;
+
+
+CREATE OR REPLACE FUNCTION create_dm_channel(
+    user1_id UUID,
+    user2_id UUID,
+    channel_type INT2
+)
+    RETURNS UUID
+    LANGUAGE plpgsql
+AS
+$$
+DECLARE
+    new_channel_id UUID;
+    channel_name   VARCHAR;
+BEGIN
+    -- Validate parameters
+    IF user1_id IS NULL OR user2_id IS NULL THEN
+        RAISE EXCEPTION 'Both user IDs must be provided';
+    END IF;
+
+    IF user1_id = user2_id THEN
+        RAISE EXCEPTION 'Cannot create a DM channel with the same user';
+    END IF;
+
+-- Check if users exist
+    IF NOT exists (SELECT 1 FROM "user" WHERE id = user1_id) OR
+       NOT exists (SELECT 1 FROM "user" WHERE id = user2_id) THEN
+        RAISE EXCEPTION 'One or both users do not exist';
+    END IF;
+
+-- Check if DM already exists between these users
+    IF exists (SELECT 1
+               FROM channel c
+                        JOIN channel_recipient cr1 ON c.id = cr1.channel_id AND cr1.user_id = user1_id
+                        JOIN channel_recipient cr2 ON c.id = cr2.channel_id AND cr2.user_id = user2_id
+               WHERE c.type = channel_type
+                 AND (SELECT count(*) FROM channel_recipient WHERE channel_id = c.id) = 2) THEN
+        -- Find and return the existing channel ID
+        SELECT c.id
+        INTO new_channel_id
+        FROM channel c
+                 JOIN channel_recipient cr1 ON c.id = cr1.channel_id AND cr1.user_id = user1_id
+                 JOIN channel_recipient cr2 ON c.id = cr2.channel_id AND cr2.user_id = user2_id
+        WHERE c.type = channel_type
+          AND (SELECT count(*) FROM channel_recipient WHERE channel_id = c.id) = 2
+        LIMIT 1;
+
+        RAISE NOTICE 'DM channel already exists between these users with ID: %', new_channel_id;
+        RETURN new_channel_id;
+    END IF;
+
+-- Generate channel name (conventionally uses user IDs in DMs)
+    channel_name := concat(user1_id, '-', user2_id);
+
+    -- Create new channel
+    INSERT INTO "channel" ("name", "type", "position")
+    VALUES (channel_name, channel_type, 0)
+    RETURNING id INTO new_channel_id;
+
+-- Add both users as recipients
+    INSERT INTO "channel_recipient" ("channel_id", "user_id")
+    VALUES (new_channel_id, user1_id),
+           (new_channel_id, user2_id);
+
+    RAISE NOTICE 'DM channel created with ID: %', new_channel_id;
+    RETURN new_channel_id;
+END;
+$$;

migrations/20250510184916_file.down.sql

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+DROP TABLE "message_attachment";
+DROP TABLE "file";

migrations/20250510184916_file.up.sql

@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS "file"
+(
+    "id"           UUID    NOT NULL PRIMARY KEY DEFAULT uuid_generate_v7(),
+    "filename"     VARCHAR NOT NULL,
+    "content_type" VARCHAR NOT NULL,
+    "url"          VARCHAR NOT NULL,
+    "size"         INT8    NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "message_attachment"
+(
+    "message_id"    UUID NOT NULL REFERENCES "message" ON DELETE CASCADE,
+    "attachment_id" UUID NOT NULL REFERENCES "file" ON DELETE CASCADE,
+    "order"         INT2 NOT NULL,
+    PRIMARY KEY ("message_id", "attachment_id")
+);