Implement Phase 2 improvements

supabase/migrations/20251015120658_73b14cb1-9fe0-473d-aaa4-4e440590bccc.sql

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+-- Phase 2: Critical Database Indexes for Moderation Performance
+-- These indexes optimize the most frequently queried patterns in the moderation system
+
+-- ================================================================
+-- 1. CONTENT_SUBMISSIONS INDEXES
+-- ================================================================
+
+-- Primary moderation queue query: status + escalated + created_at
+-- Supports: WHERE status IN (...) ORDER BY escalated DESC, created_at ASC
+CREATE INDEX IF NOT EXISTS idx_content_submissions_queue 
+  ON content_submissions(status, escalated DESC, created_at ASC)
+  WHERE status IN ('pending', 'partially_approved');
+
+-- Lock management queries: assigned_to + locked_until
+-- Supports: WHERE assigned_to = ? AND locked_until > now()
+CREATE INDEX IF NOT EXISTS idx_content_submissions_locks 
+  ON content_submissions(assigned_to, locked_until)
+  WHERE assigned_to IS NOT NULL;
+
+-- User's own submissions lookup
+-- Supports: WHERE user_id = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_content_submissions_user 
+  ON content_submissions(user_id, created_at DESC);
+
+-- Submission type filtering
+-- Supports: WHERE submission_type = ? AND status = ?
+CREATE INDEX IF NOT EXISTS idx_content_submissions_type 
+  ON content_submissions(submission_type, status);
+
+-- ================================================================
+-- 2. REPORTS INDEXES
+-- ================================================================
+
+-- Reports queue query: status + created_at
+-- Supports: WHERE status = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_reports_status_created 
+  ON reports(status, created_at DESC);
+
+-- Reported entity lookups
+-- Supports: WHERE reported_entity_type = ? AND reported_entity_id = ?
+CREATE INDEX IF NOT EXISTS idx_reports_entity 
+  ON reports(reported_entity_type, reported_entity_id);
+
+-- Reporter history lookups
+-- Supports: WHERE reporter_id = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_reports_reporter 
+  ON reports(reporter_id, created_at DESC);
+
+-- ================================================================
+-- 3. USER_ROLES INDEXES
+-- ================================================================
+
+-- Role checks (most critical for RLS)
+-- Supports: WHERE user_id = ? AND role = ?
+CREATE INDEX IF NOT EXISTS idx_user_roles_user_role 
+  ON user_roles(user_id, role);
+
+-- All roles for a user (for permission checks)
+-- Supports: WHERE user_id = ?
+CREATE INDEX IF NOT EXISTS idx_user_roles_user 
+  ON user_roles(user_id);
+
+-- ================================================================
+-- 4. SUBMISSION_ITEMS INDEXES
+-- ================================================================
+
+-- Items by submission
+-- Supports: WHERE submission_id = ? ORDER BY created_at
+CREATE INDEX IF NOT EXISTS idx_submission_items_submission 
+  ON submission_items(submission_id, created_at);
+
+-- Dependency lookups
+-- Supports: WHERE depends_on = ?
+CREATE INDEX IF NOT EXISTS idx_submission_items_depends_on 
+  ON submission_items(depends_on)
+  WHERE depends_on IS NOT NULL;
+
+-- Status-based filtering
+-- Supports: WHERE status = ? AND submission_id = ?
+CREATE INDEX IF NOT EXISTS idx_submission_items_status 
+  ON submission_items(status, submission_id);
+
+-- ================================================================
+-- 5. PHOTO_SUBMISSIONS INDEXES
+-- ================================================================
+
+-- Photos by submission
+-- Supports: WHERE submission_id = ?
+CREATE INDEX IF NOT EXISTS idx_photo_submissions_submission 
+  ON photo_submissions(submission_id);
+
+-- Photos by entity
+-- Supports: WHERE entity_type = ? AND entity_id = ?
+CREATE INDEX IF NOT EXISTS idx_photo_submissions_entity 
+  ON photo_submissions(entity_type, entity_id);
+
+-- ================================================================
+-- 6. ADMIN_AUDIT_LOG INDEXES
+-- ================================================================
+
+-- Admin actions on user
+-- Supports: WHERE target_user_id = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_admin_audit_target 
+  ON admin_audit_log(target_user_id, created_at DESC);
+
+-- Admin's actions
+-- Supports: WHERE admin_user_id = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_admin_audit_admin 
+  ON admin_audit_log(admin_user_id, created_at DESC);
+
+-- Action type filtering
+-- Supports: WHERE action = ? ORDER BY created_at DESC
+CREATE INDEX IF NOT EXISTS idx_admin_audit_action 
+  ON admin_audit_log(action, created_at DESC);
+
+-- ================================================================
+-- ANALYSIS
+-- ================================================================
+
+-- Run ANALYZE to update query planner statistics
+ANALYZE content_submissions;
+ANALYZE reports;
+ANALYZE user_roles;
+ANALYZE submission_items;
+ANALYZE photo_submissions;
+ANALYZE admin_audit_log;