-- ==================================================
-- VIBN UNIFIED SCHEMA FOR COOLIFY
-- Combines Firebase collections + Railway PostgreSQL
-- ==================================================

-- Extensions
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

-- ==================================================
-- USERS (replaces Firebase Auth + Firestore users)
-- ==================================================
CREATE TABLE users (
    id SERIAL PRIMARY KEY,
    uid VARCHAR(255) UNIQUE NOT NULL, -- Firebase UID or generated
    email VARCHAR(255) UNIQUE NOT NULL,
    password_hash VARCHAR(255), -- For email/password auth
    display_name VARCHAR(255),
    photo_url VARCHAR(500),
    workspace VARCHAR(255) UNIQUE NOT NULL, -- URL slug: "marks-account"
    
    -- OAuth providers
    google_id VARCHAR(255) UNIQUE,
    github_id VARCHAR(255) UNIQUE,
    
    -- Metadata
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    last_login TIMESTAMP,
    settings JSONB DEFAULT '{}'::jsonb
);

CREATE INDEX idx_users_email ON users(email);
CREATE INDEX idx_users_workspace ON users(workspace);

-- ==================================================
-- CLIENTS (Organizations/Companies)
-- ==================================================
CREATE TABLE clients (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    slug VARCHAR(255) UNIQUE NOT NULL, -- URL-friendly
    owner_user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
    
    -- Subscription/Billing
    subscription_tier VARCHAR(50) DEFAULT 'free', -- free, starter, pro, enterprise
    stripe_customer_id VARCHAR(255),
    max_users INTEGER DEFAULT 5,
    max_projects INTEGER DEFAULT 10,
    
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    metadata JSONB DEFAULT '{}'::jsonb
);

CREATE INDEX idx_clients_owner ON clients(owner_user_id);
CREATE INDEX idx_clients_slug ON clients(slug);

-- ==================================================
-- PROJECTS (replaces Firebase projects collection)
-- ==================================================
CREATE TABLE projects (
    id SERIAL PRIMARY KEY,
    firebase_id VARCHAR(255) UNIQUE, -- For migration compatibility
    client_id INTEGER REFERENCES clients(id) ON DELETE CASCADE,
    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE, -- Owner
    
    -- Project Identity
    name VARCHAR(255) NOT NULL,
    slug VARCHAR(255) NOT NULL,
    workspace VARCHAR(255) NOT NULL, -- User workspace slug
    
    -- Product Details
    product_name VARCHAR(255) NOT NULL,
    product_vision TEXT,
    project_type VARCHAR(50) DEFAULT 'scratch', -- scratch, existing
    
    -- Status
    status VARCHAR(50) DEFAULT 'active', -- active, on_hold, completed, archived
    current_phase VARCHAR(50) DEFAULT 'collection', -- collection, extraction, vision, mvp, marketing
    phase_status VARCHAR(50) DEFAULT 'not_started', -- not_started, in_progress, completed
    
    -- Integrations
    workspace_path VARCHAR(500), -- Local directory path
    workspace_name VARCHAR(255),
    is_for_client BOOLEAN DEFAULT false,
    has_logo BOOLEAN DEFAULT false,
    has_domain BOOLEAN DEFAULT false,
    has_website BOOLEAN DEFAULT false,
    has_github BOOLEAN DEFAULT false,
    has_chatgpt BOOLEAN DEFAULT false,
    github_repo VARCHAR(500),
    chatgpt_project_id VARCHAR(255),
    
    -- Git/Deployment
    gitea_repo_url VARCHAR(500),
    coolify_app_id VARCHAR(255),
    coolify_project_uuid VARCHAR(255),
    deployment_url VARCHAR(500),
    
    -- Phase Data
    phase_data JSONB DEFAULT '{}'::jsonb, -- Stores all phase artifacts
    phase_history JSONB DEFAULT '[]'::jsonb,
    phase_scores JSONB DEFAULT '{}'::jsonb,
    
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    
    UNIQUE(client_id, slug)
);

CREATE INDEX idx_projects_client ON projects(client_id);
CREATE INDEX idx_projects_user ON projects(user_id);
CREATE INDEX idx_projects_workspace ON projects(workspace);
CREATE INDEX idx_projects_status ON projects(status);
CREATE INDEX idx_projects_firebase_id ON projects(firebase_id);

-- ==================================================
-- PROJECT_CONTRIBUTORS (Team collaboration)
-- ==================================================
CREATE TABLE project_contributors (
    id SERIAL PRIMARY KEY,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
    
    role VARCHAR(50) DEFAULT 'developer', -- owner, admin, developer, viewer
    permissions JSONB DEFAULT '{"read":true,"write":true,"admin":false}'::jsonb,
    joined_at TIMESTAMP DEFAULT NOW(),
    
    total_time_minutes INTEGER DEFAULT 0,
    
    UNIQUE(project_id, user_id)
);

CREATE INDEX idx_contributors_project ON project_contributors(project_id);
CREATE INDEX idx_contributors_user ON project_contributors(user_id);

-- ==================================================
-- SESSIONS (replaces both Firebase sessions + Railway logs)
-- ==================================================
CREATE TABLE sessions (
    id SERIAL PRIMARY KEY,
    session_id VARCHAR(255) UNIQUE NOT NULL,
    firebase_id VARCHAR(255), -- For migration
    
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
    
    -- Timing
    started_at TIMESTAMP NOT NULL DEFAULT NOW(),
    last_updated TIMESTAMP NOT NULL DEFAULT NOW(),
    ended_at TIMESTAMP,
    duration_minutes INTEGER DEFAULT 0,
    
    -- Status
    status VARCHAR(50) DEFAULT 'active', -- active, idle, completed
    needs_project_association BOOLEAN DEFAULT false,
    
    -- Context
    workspace_path VARCHAR(500),
    workspace_name VARCHAR(255),
    ide_name VARCHAR(50) DEFAULT 'Cursor', -- Cursor, VS Code, etc.
    
    -- Content
    conversation JSONB DEFAULT '[]'::jsonb, -- Full chat history
    file_changes JSONB DEFAULT '[]'::jsonb, -- Files modified
    files_modified TEXT[], -- Quick array for queries
    
    -- Metrics
    message_count INTEGER DEFAULT 0,
    user_message_count INTEGER DEFAULT 0,
    assistant_message_count INTEGER DEFAULT 0,
    file_change_count INTEGER DEFAULT 0,
    
    -- AI Usage & Cost
    total_tokens INTEGER DEFAULT 0,
    prompt_tokens INTEGER DEFAULT 0,
    completion_tokens INTEGER DEFAULT 0,
    estimated_cost_usd NUMERIC(10,6) DEFAULT 0,
    model VARCHAR(100),
    
    -- AI Insights
    summary TEXT,
    conversation_summary TEXT,
    tasks_identified JSONB DEFAULT '[]'::jsonb,
    decisions_made JSONB DEFAULT '[]'::jsonb,
    technologies_used JSONB DEFAULT '[]'::jsonb,
    
    metadata JSONB DEFAULT '{}'::jsonb
);

CREATE INDEX idx_sessions_project ON sessions(project_id);
CREATE INDEX idx_sessions_user ON sessions(user_id);
CREATE INDEX idx_sessions_status ON sessions(status);
CREATE INDEX idx_sessions_started ON sessions(started_at);
CREATE INDEX idx_sessions_session_id ON sessions(session_id);
CREATE INDEX idx_sessions_firebase_id ON sessions(firebase_id);

-- ==================================================
-- WORK_COMPLETED (AI-extracted accomplishments)
-- ==================================================
CREATE TABLE work_completed (
    id SERIAL PRIMARY KEY,
    session_id INTEGER REFERENCES sessions(id) ON DELETE CASCADE,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    
    title VARCHAR(500) NOT NULL,
    description TEXT,
    category VARCHAR(100), -- frontend, backend, database, deployment, testing, docs, bugfix
    
    files_modified JSONB DEFAULT '[]'::jsonb,
    
    completed_at TIMESTAMP DEFAULT NOW(),
    extracted_by_ai BOOLEAN DEFAULT true
);

CREATE INDEX idx_work_completed_project ON work_completed(project_id);
CREATE INDEX idx_work_completed_session ON work_completed(session_id);
CREATE INDEX idx_work_completed_category ON work_completed(category);

-- ==================================================
-- ARCHITECTURAL_DECISIONS (Design decisions)
-- ==================================================
CREATE TABLE architectural_decisions (
    id SERIAL PRIMARY KEY,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    identified_by_session_id INTEGER REFERENCES sessions(id) ON DELETE SET NULL,
    
    title VARCHAR(500) NOT NULL,
    context TEXT,
    decision TEXT NOT NULL,
    consequences TEXT,
    
    status VARCHAR(50) DEFAULT 'accepted', -- proposed, accepted, deprecated, superseded
    
    tags JSONB DEFAULT '[]'::jsonb,
    
    decided_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX idx_arch_decisions_project ON architectural_decisions(project_id);
CREATE INDEX idx_arch_decisions_status ON architectural_decisions(status);

-- ==================================================
-- ARCHITECTURE_DOCS (Auto-maintained documentation)
-- ==================================================
CREATE TABLE architecture_docs (
    id SERIAL PRIMARY KEY,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    
    doc_type VARCHAR(100) NOT NULL, -- tech_stack, data_model, api_design, deployment
    content TEXT NOT NULL,
    
    version INTEGER DEFAULT 1,
    last_ai_update TIMESTAMP,
    last_manual_update TIMESTAMP,
    
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    
    UNIQUE(project_id, doc_type)
);

CREATE INDEX idx_arch_docs_project ON architecture_docs(project_id);
CREATE INDEX idx_arch_docs_type ON architecture_docs(doc_type);

-- ==================================================
-- TASKS (Project tasks)
-- ==================================================
CREATE TABLE tasks (
    id SERIAL PRIMARY KEY,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    
    title VARCHAR(500) NOT NULL,
    description TEXT,
    
    status VARCHAR(50) DEFAULT 'todo', -- todo, in_progress, review, done, blocked
    priority VARCHAR(50) DEFAULT 'medium', -- low, medium, high, urgent
    
    assigned_to INTEGER REFERENCES users(id) ON DELETE SET NULL,
    created_by INTEGER REFERENCES users(id) ON DELETE SET NULL,
    
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW(),
    completed_at TIMESTAMP,
    
    identified_by_session_id INTEGER REFERENCES sessions(id) ON DELETE SET NULL,
    related_sessions JSONB DEFAULT '[]'::jsonb,
    
    metadata JSONB DEFAULT '{}'::jsonb
);

CREATE INDEX idx_tasks_project ON tasks(project_id);
CREATE INDEX idx_tasks_status ON tasks(status);
CREATE INDEX idx_tasks_assigned ON tasks(assigned_to);

-- ==================================================
-- ANALYSES (replaces Firebase analyses collection)
-- ==================================================
CREATE TABLE analyses (
    id SERIAL PRIMARY KEY,
    firebase_id VARCHAR(255), -- For migration
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    
    type VARCHAR(50) NOT NULL, -- code, chatgpt, github, combined
    summary TEXT,
    tech_stack JSONB DEFAULT '[]'::jsonb,
    features JSONB DEFAULT '[]'::jsonb,
    raw_data JSONB DEFAULT '{}'::jsonb,
    
    created_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX idx_analyses_project ON analyses(project_id);
CREATE INDEX idx_analyses_type ON analyses(type);

-- ==================================================
-- API_KEYS (User API keys for extension)
-- ==================================================
CREATE TABLE api_keys (
    id SERIAL PRIMARY KEY,
    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
    
    key_hash VARCHAR(255) UNIQUE NOT NULL,
    key_prefix VARCHAR(20), -- First few chars for display
    
    name VARCHAR(255), -- User-friendly name
    last_used TIMESTAMP,
    
    created_at TIMESTAMP DEFAULT NOW(),
    expires_at TIMESTAMP,
    revoked BOOLEAN DEFAULT false
);

CREATE INDEX idx_api_keys_user ON api_keys(user_id);
CREATE INDEX idx_api_keys_hash ON api_keys(key_hash);

-- ==================================================
-- USER_SESSIONS (Authentication sessions)
-- ==================================================
CREATE TABLE user_sessions (
    id SERIAL PRIMARY KEY,
    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
    
    token VARCHAR(500) UNIQUE NOT NULL,
    refresh_token VARCHAR(500),
    
    created_at TIMESTAMP DEFAULT NOW(),
    expires_at TIMESTAMP,
    last_activity TIMESTAMP DEFAULT NOW(),
    
    ip_address VARCHAR(45),
    user_agent TEXT
);

CREATE INDEX idx_user_sessions_token ON user_sessions(token);
CREATE INDEX idx_user_sessions_user ON user_sessions(user_id);
CREATE INDEX idx_user_sessions_expires ON user_sessions(expires_at);

-- ==================================================
-- KNOWLEDGE_ITEMS (Chat/Code context for AI)
-- ==================================================
CREATE TABLE knowledge_items (
    id SERIAL PRIMARY KEY,
    project_id INTEGER REFERENCES projects(id) ON DELETE CASCADE,
    
    item_type VARCHAR(50) NOT NULL, -- chat_history, code_file, github_issue, documentation
    source VARCHAR(100), -- cursor, chatgpt, github, manual
    
    title VARCHAR(500),
    content TEXT,
    metadata JSONB DEFAULT '{}'::jsonb,
    
    -- Status
    processed BOOLEAN DEFAULT false,
    chunk_count INTEGER DEFAULT 0,
    
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW()
);

CREATE INDEX idx_knowledge_items_project ON knowledge_items(project_id);
CREATE INDEX idx_knowledge_items_type ON knowledge_items(item_type);
CREATE INDEX idx_knowledge_items_processed ON knowledge_items(processed);

-- ==================================================
-- ANALYTICS VIEWS
-- ==================================================

-- Project health overview
CREATE OR REPLACE VIEW project_health AS
SELECT 
    p.id as project_id,
    p.name as project_name,
    p.status,
    p.current_phase,
    c.name as client_name,
    COUNT(DISTINCT s.id) as session_count,
    COUNT(DISTINCT s.user_id) as active_users,
    SUM(s.total_tokens) as total_tokens,
    SUM(s.estimated_cost_usd) as total_cost,
    COUNT(DISTINCT t.id) FILTER (WHERE t.status = 'done') as completed_tasks,
    COUNT(DISTINCT t.id) FILTER (WHERE t.status != 'done') as pending_tasks,
    MAX(s.last_updated) as last_activity
FROM projects p
LEFT JOIN clients c ON p.client_id = c.id
LEFT JOIN sessions s ON s.project_id = p.id
LEFT JOIN tasks t ON t.project_id = p.id
GROUP BY p.id, p.name, p.status, p.current_phase, c.name;

-- User activity summary
CREATE OR REPLACE VIEW user_activity AS
SELECT 
    u.id as user_id,
    u.email,
    u.display_name,
    COUNT(DISTINCT s.id) as session_count,
    COUNT(DISTINCT s.project_id) as projects_worked_on,
    SUM(s.total_tokens) as total_tokens,
    SUM(s.estimated_cost_usd) as total_cost,
    MAX(s.last_updated) as last_activity
FROM users u
LEFT JOIN sessions s ON s.user_id = u.id
GROUP BY u.id, u.email, u.display_name;

-- Organization billing summary
CREATE OR REPLACE VIEW organization_billing AS
SELECT 
    c.id as client_id,
    c.name as organization_name,
    c.subscription_tier,
    COUNT(DISTINCT u.id) as total_users,
    COUNT(DISTINCT p.id) as total_projects,
    COUNT(DISTINCT s.id) as total_sessions,
    SUM(s.total_tokens) as total_tokens,
    SUM(s.estimated_cost_usd) as total_cost,
    SUM(s.estimated_cost_usd) FILTER (
        WHERE s.started_at >= DATE_TRUNC('month', CURRENT_DATE)
    ) as current_month_cost
FROM clients c
LEFT JOIN projects p ON p.client_id = c.id
LEFT JOIN sessions s ON s.project_id = p.id
LEFT JOIN users u ON u.id = c.owner_user_id OR EXISTS (
    SELECT 1 FROM project_contributors pc 
    WHERE pc.project_id = p.id AND pc.user_id = u.id
)
GROUP BY c.id, c.name, c.subscription_tier;

-- ==================================================
-- HELPER FUNCTIONS
-- ==================================================

-- Auto-update updated_at timestamps
CREATE OR REPLACE FUNCTION update_updated_at_column()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = NOW();
    RETURN NEW;
END;
$$ language 'plpgsql';

-- Apply to tables
CREATE TRIGGER update_users_updated_at BEFORE UPDATE ON users
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_clients_updated_at BEFORE UPDATE ON clients
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_projects_updated_at BEFORE UPDATE ON projects
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

CREATE TRIGGER update_sessions_updated_at BEFORE UPDATE ON sessions
    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();

-- ==================================================
-- SEED DATA (Optional)
-- ==================================================

-- Create default user (you)
INSERT INTO users (uid, email, display_name, workspace)
VALUES 
    ('mark-admin-001', 'mark@getacquired.com', 'Mark Henderson', 'marks-account')
ON CONFLICT (email) DO NOTHING;

-- Create default client (your organization)
INSERT INTO clients (name, slug, owner_user_id, subscription_tier)
VALUES 
    ('VIBN', 'vibn', 1, 'enterprise')
ON CONFLICT (slug) DO NOTHING;

COMMENT ON TABLE users IS 'VIBN users (developers, team members)';
COMMENT ON TABLE clients IS 'Organizations/Companies using VIBN';
COMMENT ON TABLE projects IS 'Development projects under organizations';
COMMENT ON TABLE sessions IS 'AI coding sessions with full conversation logs';
COMMENT ON TABLE work_completed IS 'AI-extracted accomplishments from sessions';
COMMENT ON TABLE architectural_decisions IS 'Design decisions made during development';