feat(project-currency): implement project-specific currency support

- Added a currency column to the projects table to allow different projects to use different currencies.
- Updated existing projects to default to 'USD' if no currency is set.
- Enhanced project finance controller to handle currency retrieval and updates.
- Introduced API endpoints for updating project currency with validation.
- Updated frontend components to display and manage project currency effectively.

worklenz-backend/database/migrations/20250117000000-add-project-currency.sql

@@ -0,0 +1,20 @@
+-- Migration: Add currency column to projects table
+-- Date: 2025-01-17
+-- Description: Adds project-specific currency support to allow different projects to use different currencies
+
+-- Add currency column to projects table
+ALTER TABLE projects
+    ADD COLUMN IF NOT EXISTS currency VARCHAR(3) DEFAULT 'USD';
+
+-- Add comment for documentation
+COMMENT ON COLUMN projects.currency IS 'Project-specific currency code (e.g., USD, EUR, GBP, JPY, etc.)';
+
+-- Add constraint to ensure currency codes are uppercase and 3 characters
+ALTER TABLE projects
+    ADD CONSTRAINT projects_currency_format_check 
+    CHECK (currency ~ '^[A-Z]{3}$');
+
+-- Update existing projects to have a default currency if they don't have one
+UPDATE projects 
+SET currency = 'USD' 
+WHERE currency IS NULL; 

worklenz-backend/database/sql/1_tables.sql

@@ -783,9 +783,12 @@ CREATE TABLE IF NOT EXISTS projects (
     estimated_working_days INTEGER                  DEFAULT 0,
     use_manual_progress    BOOLEAN                  DEFAULT FALSE,
     use_weighted_progress  BOOLEAN                  DEFAULT FALSE,
-    use_time_progress      BOOLEAN                  DEFAULT FALSE
+    use_time_progress      BOOLEAN                  DEFAULT FALSE,
+    currency               VARCHAR(3)               DEFAULT 'USD'
 );
 
+COMMENT ON COLUMN projects.currency IS 'Project-specific currency code (e.g., USD, EUR, GBP, JPY, etc.)';
+
 ALTER TABLE projects
     ADD CONSTRAINT projects_pk
         PRIMARY KEY (id);

worklenz-backend/database/sql/4_functions.sql

@@ -5401,7 +5401,8 @@ BEGIN
         updated_at             = CURRENT_TIMESTAMP,
         estimated_working_days = (_body ->> 'working_days')::INTEGER,
         estimated_man_days     = (_body ->> 'man_days')::INTEGER,
-        hours_per_day          = (_body ->> 'hours_per_day')::INTEGER
+        hours_per_day          = (_body ->> 'hours_per_day')::INTEGER,
+        currency               = COALESCE(UPPER((_body ->> 'currency')::TEXT), currency)
     WHERE id = (_body ->> 'id')::UUID
       AND team_id = _team_id
     RETURNING id INTO _project_id;