/**
 * Store Discovery Handler
 *
 * Per TASK_WORKFLOW_2024-12-10.md: Discovers new stores and returns their IDs for task chaining.
 *
 * Flow:
 * 1. For each active state, run Dutchie discovery
 * 2. Discover locations via GraphQL
 * 3. Auto-promote valid locations to dispensaries table
 * 4. Return newStoreIds[] for chaining to payload_fetch
 *
 * Chaining:
 * store_discovery → (returns newStoreIds) → payload_fetch → product_refresh
 */

import { TaskContext, TaskResult } from '../task-worker';
import { discoverState } from '../../discovery';

export async function handleStoreDiscovery(ctx: TaskContext): Promise<TaskResult> {
  const { pool, task } = ctx;
  const platform = task.platform || 'dutchie';

  console.log(`[StoreDiscovery] Starting discovery for platform: ${platform}`);

  try {
    // Get states to discover
    const statesResult = await pool.query(`
      SELECT code FROM states WHERE is_active = true ORDER BY code
    `);
    const stateCodes = statesResult.rows.map(r => r.code);

    if (stateCodes.length === 0) {
      return { success: true, storesDiscovered: 0, newStoreIds: [], message: 'No active states to discover' };
    }

    let totalDiscovered = 0;
    let totalPromoted = 0;
    // Per TASK_WORKFLOW_2024-12-10.md: Collect all new store IDs for task chaining
    const allNewStoreIds: number[] = [];

    // Run discovery for each state
    for (const stateCode of stateCodes) {
      // Heartbeat before each state
      await ctx.heartbeat();

      console.log(`[StoreDiscovery] Discovering stores in ${stateCode}...`);

      try {
        const result = await discoverState(pool, stateCode);
        totalDiscovered += result.totalLocationsFound || 0;
        totalPromoted += result.totalLocationsUpserted || 0;

        // Per TASK_WORKFLOW_2024-12-10.md: Collect new IDs for chaining
        if (result.newDispensaryIds && result.newDispensaryIds.length > 0) {
          allNewStoreIds.push(...result.newDispensaryIds);
          console.log(`[StoreDiscovery] ${stateCode}: ${result.newDispensaryIds.length} new stores`);
        }

        console.log(`[StoreDiscovery] ${stateCode}: found ${result.totalLocationsFound}, upserted ${result.totalLocationsUpserted}`);
      } catch (error: unknown) {
        const errorMessage = error instanceof Error ? error.message : 'Unknown error';
        console.error(`[StoreDiscovery] Error discovering ${stateCode}:`, errorMessage);
        // Continue with other states
      }
    }

    console.log(`[StoreDiscovery] Complete: ${totalDiscovered} discovered, ${totalPromoted} promoted, ${allNewStoreIds.length} new stores`);

    return {
      success: true,
      storesDiscovered: totalDiscovered,
      storesPromoted: totalPromoted,
      statesProcessed: stateCodes.length,
      // Per TASK_WORKFLOW_2024-12-10.md: Return new IDs for task chaining
      newStoreIds: allNewStoreIds,
    };
  } catch (error: unknown) {
    const errorMessage = error instanceof Error ? error.message : 'Unknown error';
    console.error(`[StoreDiscovery] Error:`, errorMessage);
    return {
      success: false,
      error: errorMessage,
      newStoreIds: [],
    };
  }
}