-- 자재 규격/재질 기준표 테이블 생성 스크립트
-- 실행 순서: 1) material_standards, 2) material_categories, 3) material_specifications, 4) material_grades, 5) material_patterns
-- 특수 재질: 6) special_materials, 7) special_material_grades, 8) special_material_patterns

-- 1. 자재 규격 표준 테이블
CREATE TABLE IF NOT EXISTS material_standards (
    id SERIAL PRIMARY KEY,
    standard_code VARCHAR(20) UNIQUE NOT NULL,
    standard_name VARCHAR(100) NOT NULL,
    description TEXT,
    country VARCHAR(50),
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 2. 제조방식별 카테고리 테이블
CREATE TABLE IF NOT EXISTS material_categories (
    id SERIAL PRIMARY KEY,
    standard_id INTEGER REFERENCES material_standards(id),
    category_code VARCHAR(50) NOT NULL,
    category_name VARCHAR(100) NOT NULL,
    description TEXT,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 3. 구체적인 규격 테이블
CREATE TABLE IF NOT EXISTS material_specifications (
    id SERIAL PRIMARY KEY,
    category_id INTEGER REFERENCES material_categories(id),
    spec_code VARCHAR(20) NOT NULL,
    spec_name VARCHAR(100) NOT NULL,
    description TEXT,
    material_type VARCHAR(50),
    manufacturing VARCHAR(50),
    pressure_rating VARCHAR(100),
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 4. 등급별 상세 정보 테이블
CREATE TABLE IF NOT EXISTS material_grades (
    id SERIAL PRIMARY KEY,
    specification_id INTEGER REFERENCES material_specifications(id),
    grade_code VARCHAR(20) NOT NULL,
    grade_name VARCHAR(100),
    composition VARCHAR(200),
    applications VARCHAR(200),
    temp_max VARCHAR(50),
    temp_range VARCHAR(100),
    yield_strength VARCHAR(50),
    tensile_strength VARCHAR(50),
    corrosion_resistance VARCHAR(50),
    stabilizer VARCHAR(50),
    base_grade VARCHAR(20),
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 5. 정규식 패턴 테이블
CREATE TABLE IF NOT EXISTS material_patterns (
    id SERIAL PRIMARY KEY,
    specification_id INTEGER REFERENCES material_specifications(id),
    pattern TEXT NOT NULL,
    description VARCHAR(200),
    priority INTEGER DEFAULT 1,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 6. 특수 재질 테이블
CREATE TABLE IF NOT EXISTS special_materials (
    id SERIAL PRIMARY KEY,
    material_type VARCHAR(50) NOT NULL,
    material_name VARCHAR(100) NOT NULL,
    description TEXT,
    composition VARCHAR(200),
    applications TEXT,
    temp_max VARCHAR(50),
    manufacturing VARCHAR(50),
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 7. 특수 재질 등급 테이블
CREATE TABLE IF NOT EXISTS special_material_grades (
    id SERIAL PRIMARY KEY,
    material_id INTEGER REFERENCES special_materials(id),
    grade_code VARCHAR(20) NOT NULL,
    composition VARCHAR(200),
    applications VARCHAR(200),
    temp_max VARCHAR(50),
    strength VARCHAR(50),
    purity VARCHAR(100),
    corrosion VARCHAR(50),
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 8. 특수 재질 정규식 패턴 테이블
CREATE TABLE IF NOT EXISTS special_material_patterns (
    id SERIAL PRIMARY KEY,
    material_id INTEGER REFERENCES special_materials(id),
    pattern TEXT NOT NULL,
    description VARCHAR(200),
    priority INTEGER DEFAULT 1,
    is_active BOOLEAN DEFAULT TRUE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- 인덱스 생성
CREATE INDEX IF NOT EXISTS idx_material_standards_code ON material_standards(standard_code);
CREATE INDEX IF NOT EXISTS idx_material_categories_standard ON material_categories(standard_id);
CREATE INDEX IF NOT EXISTS idx_material_specifications_category ON material_specifications(category_id);
CREATE INDEX IF NOT EXISTS idx_material_grades_specification ON material_grades(specification_id);
CREATE INDEX IF NOT EXISTS idx_material_patterns_specification ON material_patterns(specification_id);
CREATE INDEX IF NOT EXISTS idx_special_materials_type ON special_materials(material_type);
CREATE INDEX IF NOT EXISTS idx_special_material_grades_material ON special_material_grades(material_id);
CREATE INDEX IF NOT EXISTS idx_special_material_patterns_material ON special_material_patterns(material_id);

-- 활성 상태 인덱스
CREATE INDEX IF NOT EXISTS idx_material_standards_active ON material_standards(is_active);
CREATE INDEX IF NOT EXISTS idx_material_categories_active ON material_categories(is_active);
CREATE INDEX IF NOT EXISTS idx_material_specifications_active ON material_specifications(is_active);
CREATE INDEX IF NOT EXISTS idx_material_grades_active ON material_grades(is_active);
CREATE INDEX IF NOT EXISTS idx_material_patterns_active ON material_patterns(is_active);
CREATE INDEX IF NOT EXISTS idx_special_materials_active ON special_materials(is_active);
CREATE INDEX IF NOT EXISTS idx_special_material_grades_active ON special_material_grades(is_active);
CREATE INDEX IF NOT EXISTS idx_special_material_patterns_active ON special_material_patterns(is_active);