-- Création des tables pour l'application "Mes Budgets Participatifs"

-- Table des campagnes
CREATE TABLE campaigns (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    title TEXT NOT NULL,
    description TEXT NOT NULL,
    status TEXT NOT NULL CHECK (status IN ('deposit', 'voting', 'closed')) DEFAULT 'deposit',
    budget_per_user INTEGER NOT NULL CHECK (budget_per_user > 0),
    spending_tiers TEXT NOT NULL, -- Montants séparés par des virgules (ex: "10,25,50,100")
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- Table des propositions
CREATE TABLE propositions (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    campaign_id UUID NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE,
    title TEXT NOT NULL,
    description TEXT NOT NULL,
    author_first_name TEXT NOT NULL,
    author_last_name TEXT NOT NULL,
    author_email TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- Table des participants
CREATE TABLE participants (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    campaign_id UUID NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE,
    first_name TEXT NOT NULL,
    last_name TEXT NOT NULL,
    email TEXT NOT NULL,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- Table des votes
CREATE TABLE votes (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    campaign_id UUID NOT NULL REFERENCES campaigns(id) ON DELETE CASCADE,
    participant_id UUID NOT NULL REFERENCES participants(id) ON DELETE CASCADE,
    proposition_id UUID NOT NULL REFERENCES propositions(id) ON DELETE CASCADE,
    amount INTEGER NOT NULL CHECK (amount > 0),
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    UNIQUE(participant_id, proposition_id) -- Un seul vote par participant par proposition
);

-- Table des paramètres de l'application
CREATE TABLE settings (
    id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
    key TEXT NOT NULL UNIQUE,
    value TEXT NOT NULL,
    category TEXT NOT NULL,
    description TEXT,
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

-- Index pour améliorer les performances
CREATE INDEX idx_propositions_campaign_id ON propositions(campaign_id);
CREATE INDEX idx_participants_campaign_id ON participants(campaign_id);
CREATE INDEX idx_campaigns_status ON campaigns(status);
CREATE INDEX idx_campaigns_created_at ON campaigns(created_at DESC);

-- Index pour optimiser les requêtes
CREATE INDEX idx_votes_campaign_participant ON votes(campaign_id, participant_id);
CREATE INDEX idx_votes_proposition ON votes(proposition_id);

-- Trigger pour mettre à jour updated_at automatiquement
CREATE OR REPLACE FUNCTION update_updated_at_column()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ language 'plpgsql';

CREATE TRIGGER update_campaigns_updated_at 
    BEFORE UPDATE ON campaigns 
    FOR EACH ROW 
    EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_votes_updated_at BEFORE UPDATE ON votes
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_settings_updated_at BEFORE UPDATE ON settings
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

-- Politique RLS (Row Level Security) - Activer pour toutes les tables
ALTER TABLE campaigns ENABLE ROW LEVEL SECURITY;
ALTER TABLE propositions ENABLE ROW LEVEL SECURITY;
ALTER TABLE participants ENABLE ROW LEVEL SECURITY;
ALTER TABLE votes ENABLE ROW LEVEL SECURITY;

-- Politiques pour permettre l'accès public (à adapter selon vos besoins d'authentification)
CREATE POLICY "Allow public read access to campaigns" ON campaigns FOR SELECT USING (true);
CREATE POLICY "Allow public insert access to campaigns" ON campaigns FOR INSERT WITH CHECK (true);
CREATE POLICY "Allow public update access to campaigns" ON campaigns FOR UPDATE USING (true);
CREATE POLICY "Allow public delete access to campaigns" ON campaigns FOR DELETE USING (true);

CREATE POLICY "Allow public read access to propositions" ON propositions FOR SELECT USING (true);
CREATE POLICY "Allow public insert access to propositions" ON propositions FOR INSERT WITH CHECK (true);
CREATE POLICY "Allow public delete access to propositions" ON propositions FOR DELETE USING (true);

CREATE POLICY "Allow public read access to participants" ON participants FOR SELECT USING (true);
CREATE POLICY "Allow public insert access to participants" ON participants FOR INSERT WITH CHECK (true);
CREATE POLICY "Allow public delete access to participants" ON participants FOR DELETE USING (true);

CREATE POLICY "Allow public read access to votes" ON votes FOR SELECT USING (true);
CREATE POLICY "Allow public insert access to votes" ON votes FOR INSERT WITH CHECK (true);
CREATE POLICY "Allow public update access to votes" ON votes FOR UPDATE USING (true);
CREATE POLICY "Allow public delete access to votes" ON votes FOR DELETE USING (true);

CREATE POLICY "Allow public read access to settings" ON settings FOR SELECT USING (true);
CREATE POLICY "Allow public insert access to settings" ON settings FOR INSERT WITH CHECK (true);
CREATE POLICY "Allow public update access to settings" ON settings FOR UPDATE USING (true);
CREATE POLICY "Allow public delete access to settings" ON settings FOR DELETE USING (true);

-- Données d'exemple (optionnel)
INSERT INTO campaigns (title, description, status, budget_per_user, spending_tiers) VALUES
('Amélioration du quartier', 'Propositions pour améliorer notre quartier avec un budget participatif', 'deposit', 100, '10,25,50,100'),
('Équipements sportifs', 'Sélection d équipements sportifs pour la commune', 'voting', 50, '5,10,25,50'),
('Culture et loisirs', 'Projets culturels et de loisirs pour tous', 'closed', 75, '15,30,45,75');

-- Paramètres par défaut
INSERT INTO settings (key, value, category, description) VALUES
('randomize_propositions', 'false', 'display', 'Afficher les propositions dans un ordre aléatoire lors du vote');