-- Migration 037: Add per-store crawler profiles for Dutchie dispensaries
-- This enables per-store crawler configuration without changing shared logic
-- Phase 1: Schema only - no automatic behavior changes

-- Create the crawler profiles table
CREATE TABLE IF NOT EXISTS dispensary_crawler_profiles (
    id SERIAL PRIMARY KEY,
    dispensary_id INTEGER NOT NULL REFERENCES dispensaries(id) ON DELETE CASCADE,

    -- Human readable name for this profile
    profile_name VARCHAR(255) NOT NULL,

    -- High-level type, e.g. 'dutchie', 'treez', 'jane'
    crawler_type VARCHAR(50) NOT NULL,

    -- Optional key for mapping to a per-store crawler module later,
    -- e.g. 'curaleaf-dispensary-gilbert'
    profile_key VARCHAR(255),

    -- Generic configuration bucket; will hold selectors, URLs, flags, etc.
    config JSONB NOT NULL DEFAULT '{}'::jsonb,

    -- Execution hints (safe defaults; can be overridden in config if needed)
    timeout_ms INTEGER DEFAULT 30000,
    download_images BOOLEAN DEFAULT TRUE,
    track_stock BOOLEAN DEFAULT TRUE,

    version INTEGER DEFAULT 1,
    enabled BOOLEAN DEFAULT TRUE,

    created_at TIMESTAMPTZ DEFAULT NOW(),
    updated_at TIMESTAMPTZ DEFAULT NOW()
);

-- Unique index on dispensary_id + profile_name
CREATE UNIQUE INDEX IF NOT EXISTS dispensary_crawler_profiles_unique_name
    ON dispensary_crawler_profiles (dispensary_id, profile_name);

-- Index for finding enabled profiles by type
CREATE INDEX IF NOT EXISTS idx_crawler_profiles_type_enabled
    ON dispensary_crawler_profiles (crawler_type, enabled);

-- Index for dispensary lookup
CREATE INDEX IF NOT EXISTS idx_crawler_profiles_dispensary
    ON dispensary_crawler_profiles (dispensary_id);

-- Add FK from dispensaries to active profile
DO $$
BEGIN
    IF NOT EXISTS (SELECT 1 FROM information_schema.columns
                   WHERE table_name = 'dispensaries'
                   AND column_name = 'active_crawler_profile_id') THEN
        ALTER TABLE dispensaries
            ADD COLUMN active_crawler_profile_id INTEGER NULL
                REFERENCES dispensary_crawler_profiles(id) ON DELETE SET NULL;
    END IF;
END $$;

-- Create index on the FK for faster joins
CREATE INDEX IF NOT EXISTS idx_dispensaries_active_profile
    ON dispensaries (active_crawler_profile_id)
    WHERE active_crawler_profile_id IS NOT NULL;

-- Create or replace trigger function for updated_at
CREATE OR REPLACE FUNCTION set_updated_at_timestamp()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = NOW();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Add trigger to keep updated_at fresh (drop first if exists to avoid duplicates)
DROP TRIGGER IF EXISTS dispensary_crawler_profiles_set_timestamp ON dispensary_crawler_profiles;
CREATE TRIGGER dispensary_crawler_profiles_set_timestamp
BEFORE UPDATE ON dispensary_crawler_profiles
FOR EACH ROW EXECUTE PROCEDURE set_updated_at_timestamp();

-- Add comments for documentation
COMMENT ON TABLE dispensary_crawler_profiles IS 'Per-store crawler configuration profiles. Each dispensary can have multiple profiles but only one active at a time.';
COMMENT ON COLUMN dispensary_crawler_profiles.profile_name IS 'Human readable name for the profile, e.g. "Curaleaf Gilbert - Dutchie v1"';
COMMENT ON COLUMN dispensary_crawler_profiles.crawler_type IS 'The crawler implementation type: dutchie, treez, jane, sandbox, custom';
COMMENT ON COLUMN dispensary_crawler_profiles.profile_key IS 'Optional identifier for per-store crawler module mapping';
COMMENT ON COLUMN dispensary_crawler_profiles.config IS 'JSONB configuration for the crawler. Schema depends on crawler_type.';
COMMENT ON COLUMN dispensary_crawler_profiles.timeout_ms IS 'Request timeout in milliseconds (default 30000)';
COMMENT ON COLUMN dispensary_crawler_profiles.download_images IS 'Whether to download product images locally';
COMMENT ON COLUMN dispensary_crawler_profiles.track_stock IS 'Whether to track inventory/stock levels';
COMMENT ON COLUMN dispensary_crawler_profiles.version IS 'Profile version number for A/B testing or upgrades';
COMMENT ON COLUMN dispensary_crawler_profiles.enabled IS 'Whether this profile can be used (soft delete)';
COMMENT ON COLUMN dispensaries.active_crawler_profile_id IS 'FK to the currently active crawler profile for this dispensary';