-- V13: Enhanced photo metadata support
-- Add photo-specific fields to media_items table

ALTER TABLE media_items ADD COLUMN date_taken TIMESTAMP;
ALTER TABLE media_items ADD COLUMN latitude REAL;
ALTER TABLE media_items ADD COLUMN longitude REAL;
ALTER TABLE media_items ADD COLUMN camera_make TEXT;
ALTER TABLE media_items ADD COLUMN camera_model TEXT;
ALTER TABLE media_items ADD COLUMN rating INTEGER CHECK (rating >= 0 AND rating <= 5);

-- Indexes for photo queries
CREATE INDEX idx_media_date_taken ON media_items(date_taken) WHERE date_taken IS NOT NULL;
CREATE INDEX idx_media_location ON media_items(latitude, longitude) WHERE latitude IS NOT NULL AND longitude IS NOT NULL;
CREATE INDEX idx_media_camera ON media_items(camera_make) WHERE camera_make IS NOT NULL;
CREATE INDEX idx_media_rating ON media_items(rating) WHERE rating IS NOT NULL;