-- G16: Third-party integration tables (IntegrationHook + IntegrationApp)
-- Reference: Chatwoot Integrations::Hook + Integrations::App

-- IntegrationHook: per-account/per-inbox integration binding
-- Stores provider-specific settings in JSONB, keyed by hook_type (slack/shopify/linear/notion/webhook)
CREATE TABLE IF NOT EXISTS integration_hooks (
    id SERIAL PRIMARY KEY,
    account_id INTEGER NOT NULL,
    inbox_id INTEGER,                              -- NULL = account-level hook
    hook_type VARCHAR(50) NOT NULL,                -- webhook/slack/shopify/linear/notion
    status VARCHAR(20) DEFAULT 'active',           -- active/inactive
    url VARCHAR(1024) DEFAULT '',                  -- webhook callback URL
    access_token VARCHAR(256),                     -- API token for the hook (unique)
    settings JSONB DEFAULT '{}',                   -- provider-specific config (Slack channel_id, Shopify shop_domain, etc.)
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    deleted_at TIMESTAMP WITH TIME ZONE
);

CREATE INDEX idx_integration_hooks_account_id ON integration_hooks(account_id) WHERE deleted_at IS NULL;
CREATE INDEX idx_integration_hooks_inbox_id ON integration_hooks(inbox_id) WHERE deleted_at IS NULL;
CREATE INDEX idx_integration_hooks_hook_type ON integration_hooks(hook_type) WHERE deleted_at IS NULL;
CREATE UNIQUE INDEX idx_integration_hooks_access_token ON integration_hooks(access_token) WHERE deleted_at IS NULL AND access_token IS NOT NULL;
CREATE INDEX idx_integration_hooks_deleted_at ON integration_hooks(deleted_at);

-- IntegrationApp: catalog of supported integrations
-- Each app is keyed by hook_type (one app per provider type)
CREATE TABLE IF NOT EXISTS integration_apps (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    description VARCHAR(512) DEFAULT '',
    hook_type VARCHAR(50) NOT NULL,                -- webhook/slack/shopify/linear/notion
    icon VARCHAR(512) DEFAULT '',                  -- icon URL or CSS class
    action_url VARCHAR(1024) DEFAULT '',           -- frontend action URL for setup page
    enabled BOOLEAN DEFAULT TRUE,                  -- whether the integration is available for installation
    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

CREATE UNIQUE INDEX idx_integration_apps_hook_type ON integration_apps(hook_type);

-- Seed default integration apps
INSERT INTO integration_apps (name, description, hook_type, icon, action_url, enabled) VALUES
    ('Slack', 'Connect Slack channels for real-time notifications', 'slack', '/assets/integrations/slack.svg', '/app/accounts/{account_id}/integrations/slack', TRUE),
    ('Shopify', 'Sync Shopify orders and customer data', 'shopify', '/assets/integrations/shopify.svg', '/app/accounts/{account_id}/integrations/shopify', TRUE),
    ('Linear', 'Create Linear issues from conversations', 'linear', '/assets/integrations/linear.svg', '/app/accounts/{account_id}/integrations/linear', TRUE),
    ('Notion', 'Export conversation summaries to Notion pages', 'notion', '/assets/integrations/notion.svg', '/app/accounts/{account_id}/integrations/notion', TRUE),
    ('Webhook', 'Custom webhook for event-driven integrations', 'webhook', '/assets/integrations/webhook.svg', '/app/accounts/{account_id}/integrations/webhook', TRUE)
ON CONFLICT (hook_type) DO NOTHING;