delete migration script

.gitignore

@@ -153,10 +153,12 @@ dist/
 *.sqlite
 *.sqlite3
 
+# import data
+resources/
+
 # PostgreSQL
 *.sql
 !init-db.sql
-!*_migration.sql
 
 # Database dumps
 *.dump

2025-05-30 temporal_migration.sql

@@ -1,122 +0,0 @@
--- Migration script for adding temporal tables to products
--- Run this script to add versioning support to your existing database
--- 
--- Note: We use '9999-12-31' as the "far future" date to represent
--- the current/active version of a product. This is more portable than PostgreSQL's
--- 'infinity' and works well with both PostgreSQL and SQLite.
---
--- New products will use CURRENT_DATE as valid_from, but existing products
--- are set to '2025-05-01' as a baseline date for historical tracking.
-
-BEGIN;
-
--- Step 1: Add temporal columns to existing products table
-ALTER TABLE products 
-ADD COLUMN valid_from DATE DEFAULT CURRENT_DATE NOT NULL,
-ADD COLUMN valid_to DATE DEFAULT '9999-12-31' NOT NULL,
-ADD COLUMN deleted BOOLEAN DEFAULT FALSE NOT NULL;
-
--- Step 2: Create products_history table
-CREATE TABLE products_history (
-    history_id SERIAL PRIMARY KEY,
-    id INTEGER NOT NULL,
-    name VARCHAR NOT NULL,
-    category_id INTEGER NOT NULL,
-    brand_id INTEGER,
-    organic BOOLEAN DEFAULT FALSE,
-    weight FLOAT,
-    weight_unit VARCHAR DEFAULT 'piece',
-    created_at TIMESTAMPTZ,
-    updated_at TIMESTAMPTZ,
-    valid_from DATE NOT NULL,
-    valid_to DATE NOT NULL,
-    deleted BOOLEAN DEFAULT FALSE NOT NULL,
-    operation CHAR(1) NOT NULL,
-    archived_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
-);
-
--- Step 3: Create indexes for performance
-CREATE INDEX idx_products_history_id ON products_history(id);
-CREATE INDEX idx_products_history_valid_period ON products_history(id, valid_from, valid_to);
-CREATE INDEX idx_products_valid_period ON products(id, valid_from, valid_to);
-
--- Step 4: Create trigger function for automatic versioning
-CREATE OR REPLACE FUNCTION products_versioning_trigger()
-RETURNS TRIGGER AS $$
-BEGIN
-    -- Handle DELETE operations
-    IF TG_OP = 'DELETE' THEN
-        -- Create history record for the deleted product
-        INSERT INTO products_history (
-            id, name, category_id, brand_id, organic, weight, weight_unit,
-            created_at, updated_at, valid_from, valid_to, deleted, operation
-        ) VALUES (
-            OLD.id, OLD.name, OLD.category_id, OLD.brand_id, OLD.organic, 
-            OLD.weight, OLD.weight_unit, OLD.created_at, OLD.updated_at,
-            OLD.valid_from, CURRENT_DATE, OLD.deleted, 'D'
-        );
-        
-        RETURN OLD;
-    END IF;
-
-    -- Handle UPDATE operations
-    IF TG_OP = 'UPDATE' THEN
-        -- Check if any versioned fields have changed
-        IF (OLD.name IS DISTINCT FROM NEW.name OR
-            OLD.category_id IS DISTINCT FROM NEW.category_id OR
-            OLD.brand_id IS DISTINCT FROM NEW.brand_id OR
-            OLD.organic IS DISTINCT FROM NEW.organic OR
-            OLD.weight IS DISTINCT FROM NEW.weight OR
-            OLD.weight_unit IS DISTINCT FROM NEW.weight_unit OR
-            OLD.deleted IS DISTINCT FROM NEW.deleted) THEN
-            
-            -- Determine the valid_to date for the history record
-            DECLARE
-                history_valid_to DATE;
-            BEGIN
-                -- If valid_from was manually changed, use that as the cutoff
-                -- Otherwise, use current date for automatic versioning
-                IF OLD.valid_from IS DISTINCT FROM NEW.valid_from THEN
-                    history_valid_to = NEW.valid_from;
-                ELSE
-                    history_valid_to = CURRENT_DATE;
-                    -- For automatic versioning, update the valid_from to today
-                    NEW.valid_from = CURRENT_DATE;
-                END IF;
-                
-                -- Create history record with the old data
-                INSERT INTO products_history (
-                    id, name, category_id, brand_id, organic, weight, weight_unit,
-                    created_at, updated_at, valid_from, valid_to, deleted, operation
-                ) VALUES (
-                    OLD.id, OLD.name, OLD.category_id, OLD.brand_id, OLD.organic, 
-                    OLD.weight, OLD.weight_unit, OLD.created_at, OLD.updated_at,
-                    OLD.valid_from, history_valid_to, OLD.deleted, 'U'
-                );
-            END;
-            
-            -- Always ensure valid_to is set to far future for current version
-            NEW.valid_to = '9999-12-31';
-            NEW.updated_at = NOW();
-        END IF;
-        
-        RETURN NEW;
-    END IF;
-    
-    RETURN NULL;
-END;
-$$ LANGUAGE plpgsql;
-
--- Step 5: Create the trigger
-CREATE TRIGGER products_versioning_trigger
-    BEFORE UPDATE OR DELETE ON products
-    FOR EACH ROW
-    EXECUTE FUNCTION products_versioning_trigger();
-
--- Step 6: Initialize existing products with proper temporal data
-UPDATE products 
-SET valid_from = '2025-05-01',
-    valid_to = '9999-12-31'
-WHERE valid_from IS NULL OR valid_to IS NULL;
-
-COMMIT;