-- ==========================================
-- CLUB DAGUERRE CAMERA DATABASE
-- Part 2: Supporting Data
-- ==========================================

-- ==========================================
-- LENSES
-- ==========================================
CREATE TABLE lenses (
  id SERIAL PRIMARY KEY,
  name VARCHAR(200) NOT NULL,
  manufacturer VARCHAR(100),
  focal_length_mm INT,
  max_aperture DECIMAL(3,1),
  lens_type VARCHAR(50),
  mount_type VARCHAR(50),
  
  notes TEXT,
  
  created_at TIMESTAMP NOT NULL DEFAULT NOW(),
  created_by INT,
  updated_at TIMESTAMP,
  updated_by INT,
  
  CONSTRAINT chk_focal_length CHECK (focal_length_mm IS NULL OR focal_length_mm > 0),
  CONSTRAINT chk_aperture CHECK (max_aperture IS NULL OR (max_aperture > 0 AND max_aperture < 32))
);

CREATE INDEX idx_lenses_name ON lenses(name);
CREATE INDEX idx_lenses_mfg ON lenses(manufacturer);
CREATE INDEX idx_lenses_focal ON lenses(focal_length_mm);
CREATE INDEX idx_lenses_aperture ON lenses(max_aperture);

COMMENT ON TABLE lenses IS 'Lens catalog - reusable across cameras';

-- Add foreign key to lens_shutter_combos
ALTER TABLE lens_shutter_combos 
ADD CONSTRAINT fk_lens FOREIGN KEY (lens_id) REFERENCES lenses(id);

-- ==========================================
-- SHUTTERS
-- ==========================================
CREATE TABLE shutters (
  id SERIAL PRIMARY KEY,
  name VARCHAR(100) NOT NULL,
  manufacturer VARCHAR(100),
  shutter_type VARCHAR(50),
  speed_range VARCHAR(100),
  
  notes TEXT,
  
  created_at TIMESTAMP NOT NULL DEFAULT NOW(),
  created_by INT,
  updated_at TIMESTAMP,
  updated_by INT
);

CREATE INDEX idx_shutters_name ON shutters(name);
CREATE INDEX idx_shutters_type ON shutters(shutter_type);

COMMENT ON TABLE shutters IS 'Shutter catalog - reusable across cameras';

-- Add foreign key to lens_shutter_combos
ALTER TABLE lens_shutter_combos 
ADD CONSTRAINT fk_shutter FOREIGN KEY (shutter_id) REFERENCES shutters(id);

-- ==========================================
-- FILM FORMATS
-- ==========================================
CREATE TABLE formats (
  id SERIAL PRIMARY KEY,
  format_code VARCHAR(20) UNIQUE NOT NULL,
  width_mm DECIMAL(6,2),
  height_mm DECIMAL(6,2),
  format_type VARCHAR(20),
  
  description_de TEXT,
  description_en TEXT,
  
  sort_order INT
);

CREATE INDEX idx_formats_code ON formats(format_code);
CREATE INDEX idx_formats_type ON formats(format_type);

COMMENT ON TABLE formats IS 'Film format definitions';

-- ==========================================
-- CONCEPTS (Multilingual Terminology)
-- ==========================================
CREATE TABLE concepts (
  id SERIAL PRIMARY KEY,
  concept_code VARCHAR(50) UNIQUE NOT NULL,
  category VARCHAR(50) NOT NULL,
  sort_order INT DEFAULT 0
);

COMMENT ON TABLE concepts IS 'Terminology concepts - language-agnostic';

-- ==========================================
-- CONCEPT TERMS (Translations)
-- ==========================================
CREATE TABLE concept_terms (
  id SERIAL PRIMARY KEY,
  concept_id INT NOT NULL REFERENCES concepts(id) ON DELETE CASCADE,
  language_code VARCHAR(5) NOT NULL,
  term VARCHAR(200) NOT NULL,
  term_type VARCHAR(20) NOT NULL,
  
  UNIQUE(concept_id, language_code, term_type),
  CONSTRAINT chk_term_type CHECK (term_type IN ('primary', 'abbreviation', 'synonym'))
);

CREATE INDEX idx_terms_concept ON concept_terms(concept_id);
CREATE INDEX idx_terms_language ON concept_terms(language_code);
CREATE INDEX idx_terms_term ON concept_terms(term);

COMMENT ON TABLE concept_terms IS 'Multilingual terms for concepts';

-- ==========================================
-- TERMINOLOGY VIEW (Backwards Compatibility)
-- ==========================================
CREATE VIEW terminology AS
SELECT 
  c.concept_code,
  c.category,
  MAX(CASE WHEN ct.language_code = 'de' AND ct.term_type = 'primary' THEN ct.term END) AS term_de,
  MAX(CASE WHEN ct.language_code = 'en' AND ct.term_type = 'primary' THEN ct.term END) AS term_en,
  MAX(CASE WHEN ct.language_code = 'de' AND ct.term_type = 'abbreviation' THEN ct.term END) AS abbreviation
FROM concepts c
LEFT JOIN concept_terms ct ON c.id = ct.concept_id
GROUP BY c.concept_code, c.category;

COMMENT ON VIEW terminology IS 'Simple view of German/English terms for quick lookups';

-- ==========================================
-- SERIAL NUMBERS (Authentication Database)
-- ==========================================
CREATE TABLE serial_numbers (
  id SERIAL PRIMARY KEY,
  camera_model_id INT NOT NULL REFERENCES camera_models(id) ON DELETE CASCADE,
  
  -- PostgreSQL range types for proper validation
  serial_range INT4RANGE NOT NULL,
  year_range INT4RANGE NOT NULL,
  
  variant_notes VARCHAR(200),
  production_notes TEXT,
  source VARCHAR(200),
  
  created_at TIMESTAMP NOT NULL DEFAULT NOW(),
  created_by INT,
  updated_at TIMESTAMP,
  
  -- Prevent overlapping serial ranges
  CONSTRAINT no_serial_overlap EXCLUDE USING GIST (
    camera_model_id WITH =,
    serial_range WITH &&
  )
);

CREATE INDEX idx_serials_model ON serial_numbers(camera_model_id);
CREATE INDEX idx_serials_range ON serial_numbers USING GIST(serial_range);
CREATE INDEX idx_serials_year ON serial_numbers USING GIST(year_range);

COMMENT ON TABLE serial_numbers IS 'Serial number ranges for camera authentication';
COMMENT ON COLUMN serial_numbers.serial_range IS 'Query: WHERE serial_range @> 52103 to check if serial is genuine';