feat(ratecard): implement CRUD operations and validation for rate cards

worklenz-backend/database/migrations/20250519000000-project-finance-module-tables.sql

@@ -0,0 +1,48 @@
+-- Dropping existing finance_rate_cards table
+DROP TABLE IF EXISTS finance_rate_cards;
+-- Creating table to store rate card details
+CREATE TABLE finance_rate_cards
+(
+    id         UUID PRIMARY KEY                  DEFAULT uuid_generate_v4(),
+    team_id    UUID                     NOT NULL REFERENCES teams (id) ON DELETE CASCADE,
+    name       VARCHAR                  NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Dropping existing finance_project_rate_card_roles table
+DROP TABLE IF EXISTS finance_project_rate_card_roles;
+-- Creating table with single id primary key
+CREATE TABLE finance_project_rate_card_roles
+(
+    id         UUID PRIMARY KEY                  DEFAULT uuid_generate_v4(),
+    project_id UUID                     NOT NULL REFERENCES projects (id) ON DELETE CASCADE,
+    role_id    UUID                     NOT NULL REFERENCES roles (id) ON DELETE CASCADE,
+    rate       DECIMAL(10, 2)           NOT NULL CHECK (rate >= 0),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    CONSTRAINT unique_project_role UNIQUE (project_id, role_id)
+);
+
+-- Dropping existing finance_rate_card_roles table
+DROP TABLE IF EXISTS finance_rate_card_roles;
+-- Creating table to store role-specific rates for rate cards
+CREATE TABLE finance_rate_card_roles
+(
+    rate_card_id UUID                     NOT NULL REFERENCES finance_rate_cards (id) ON DELETE CASCADE,
+    role_id      UUID                     REFERENCES roles (id) ON DELETE SET NULL,
+    rate         DECIMAL(10, 2)           NOT NULL CHECK (rate >= 0),
+    created_at   TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at   TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Adding project_rate_card_role_id column to project_members
+ALTER TABLE project_members
+    ADD COLUMN project_rate_card_role_id UUID REFERENCES finance_project_rate_card_roles(id) ON DELETE SET NULL;
+
+-- Adding rate_card column to projects
+ALTER TABLE projects
+ ADD COLUMN rate_card UUID REFERENCES finance_rate_cards(id) ON DELETE SET NULL;
+
+ALTER TABLE finance_rate_cards
+    ADD COLUMN currency TEXT NOT NULL DEFAULT 'LKR';