-- Migration 001: Auth & Membership (von Mitai übernommen, angepasst)
-- Erstellt: 2026-04-21
-- Beschreibung: Basis-Auth-System und Membership-Infrastruktur

-- Profiles (Nutzer)
CREATE TABLE profiles (
    id SERIAL PRIMARY KEY,
    email VARCHAR(255) UNIQUE NOT NULL,
    pin_hash VARCHAR(255) NOT NULL,
    name VARCHAR(200),
    role VARCHAR(50) DEFAULT 'user',
    tier VARCHAR(50) DEFAULT 'free',
    email_verified BOOLEAN DEFAULT false,
    verification_token VARCHAR(255),
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX idx_profiles_email ON profiles(email);
CREATE INDEX idx_profiles_role ON profiles(role);

-- Sessions (Auth-Tokens)
CREATE TABLE sessions (
    id SERIAL PRIMARY KEY,
    profile_id INT REFERENCES profiles(id) ON DELETE CASCADE,
    token VARCHAR(255) UNIQUE NOT NULL,
    created_at TIMESTAMP DEFAULT NOW(),
    expires_at TIMESTAMP NOT NULL
);

CREATE INDEX idx_sessions_token ON sessions(token);
CREATE INDEX idx_sessions_profile ON sessions(profile_id);

-- Features (Feature-Definitionen)
CREATE TABLE features (
    id SERIAL PRIMARY KEY,
    name VARCHAR(100) UNIQUE NOT NULL,
    display_name VARCHAR(200),
    description TEXT,
    created_at TIMESTAMP DEFAULT NOW()
);

-- Tier Limits (Limits pro Tier)
CREATE TABLE tier_limits (
    id SERIAL PRIMARY KEY,
    tier VARCHAR(50) NOT NULL,
    feature_id INT REFERENCES features(id),
    limit_value INT,  -- -1 = unlimited
    created_at TIMESTAMP DEFAULT NOW(),
    UNIQUE(tier, feature_id)
);

-- Subscriptions (Nutzer-Subscriptions)
CREATE TABLE subscriptions (
    id SERIAL PRIMARY KEY,
    profile_id INT REFERENCES profiles(id) ON DELETE CASCADE,
    tier VARCHAR(50) NOT NULL,
    status VARCHAR(50) DEFAULT 'trial',
    start_date DATE NOT NULL,
    end_date DATE,
    created_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX idx_subscriptions_profile ON subscriptions(profile_id);

-- User Feature Usage (Tracking)
CREATE TABLE user_feature_usage (
    id SERIAL PRIMARY KEY,
    profile_id INT REFERENCES profiles(id) ON DELETE CASCADE,
    feature_id INT REFERENCES features(id),
    usage_count INT DEFAULT 0,
    last_used TIMESTAMP,
    last_reset TIMESTAMP DEFAULT NOW(),
    created_at TIMESTAMP DEFAULT NOW(),
    UNIQUE(profile_id, feature_id)
);

CREATE INDEX idx_usage_profile_feature ON user_feature_usage(profile_id, feature_id);

-- Insert Default Features (Shinkan-spezifisch)
INSERT INTO features (name, display_name, description) VALUES
('exercises', 'Übungen', 'Anzahl Übungen pro Verein'),
('training_units', 'Trainingseinheiten', 'Anzahl Trainingseinheiten pro Monat'),
('training_programs', 'Trainingsprogramme', 'Anzahl aktive Trainingsprogramme'),
('exercise_media', 'Medien-Uploads', 'Anzahl Medien-Uploads pro Monat'),
('wiki_import', 'MediaWiki-Import', 'Zugriff auf MediaWiki-Import'),
('ai_analysis', 'KI-Analysen', 'Anzahl KI-Analysen pro Monat (zukünftig)');

-- Insert Default Tier Limits
-- Free Tier
INSERT INTO tier_limits (tier, feature_id, limit_value)
SELECT 'free', id,
    CASE
        WHEN name = 'exercises' THEN 50
        WHEN name = 'training_units' THEN 20
        WHEN name = 'training_programs' THEN 2
        WHEN name = 'exercise_media' THEN 10
        WHEN name = 'wiki_import' THEN 0
        WHEN name = 'ai_analysis' THEN 0
    END
FROM features;

-- Premium Tier
INSERT INTO tier_limits (tier, feature_id, limit_value)
SELECT 'premium', id,
    CASE
        WHEN name = 'exercises' THEN -1  -- unlimited
        WHEN name = 'training_units' THEN -1
        WHEN name = 'training_programs' THEN -1
        WHEN name = 'exercise_media' THEN 100
        WHEN name = 'wiki_import' THEN 1
        WHEN name = 'ai_analysis' THEN 50
    END
FROM features;