-- ============================================================================
-- Script: fix_dualpath_controller_relationships.sql
-- Purpose: Fix existing relationship issues and propagate controllers to dualpath machines
-- Target: MySQL 5.6 (dev and production)
--
-- Issues Fixed:
-- 1. Incorrect direction: Equipment -> Controls -> PC (should be PC -> Controls -> Equipment)
-- 2. Missing controller relationships on dualpath machines
-- ============================================================================

-- ============================================================================
-- STEP 1: FIX INCORRECTLY DIRECTED RELATIONSHIPS
-- Equipment should NOT "Control" a PC - flip these to PC -> Controls -> Equipment
-- ============================================================================

-- First, identify the bad relationships (Equipment -> Controls -> PC)
SELECT
    'BAD RELATIONSHIP' AS issue,
    mr.relationshipid,
    m1.machinenumber AS equipment_number,
    m1.hostname AS equipment_hostname,
    rt.relationshiptype,
    m2.hostname AS pc_hostname,
    m2.machinenumber AS pc_machinenumber
FROM machinerelationships mr
JOIN machines m1 ON mr.machineid = m1.machineid
JOIN machines m2 ON mr.related_machineid = m2.machineid
JOIN relationshiptypes rt ON mr.relationshiptypeid = rt.relationshiptypeid
WHERE rt.relationshiptype = 'Controls'
AND m1.pctypeid IS NULL  -- m1 is Equipment (not a PC)
AND m2.pctypeid IS NOT NULL  -- m2 IS a PC
AND mr.isactive = 1;

-- Fix: Delete the bad relationships and recreate them correctly
-- First, save the IDs we need to fix
CREATE TEMPORARY TABLE IF NOT EXISTS temp_bad_controls AS
SELECT
    mr.relationshipid,
    mr.machineid AS equipment_machineid,
    mr.related_machineid AS pc_machineid,
    mr.relationshiptypeid
FROM machinerelationships mr
JOIN machines m1 ON mr.machineid = m1.machineid
JOIN machines m2 ON mr.related_machineid = m2.machineid
WHERE mr.relationshiptypeid = (SELECT relationshiptypeid FROM relationshiptypes WHERE relationshiptype = 'Controls')
AND m1.pctypeid IS NULL
AND m2.pctypeid IS NOT NULL
AND mr.isactive = 1;

-- Show what will be fixed
SELECT 'Will fix these relationships:' AS status;
SELECT * FROM temp_bad_controls;

-- Delete the bad relationships
DELETE mr FROM machinerelationships mr
INNER JOIN temp_bad_controls t ON mr.relationshipid = t.relationshipid;

-- Create the correct relationships (PC -> Controls -> Equipment)
INSERT INTO machinerelationships (machineid, related_machineid, relationshiptypeid, isactive)
SELECT
    pc_machineid AS machineid,
    equipment_machineid AS related_machineid,
    relationshiptypeid,
    1 AS isactive
FROM temp_bad_controls t
WHERE NOT EXISTS (
    SELECT 1 FROM machinerelationships mr2
    WHERE mr2.machineid = t.pc_machineid
    AND mr2.related_machineid = t.equipment_machineid
    AND mr2.relationshiptypeid = t.relationshiptypeid
    AND mr2.isactive = 1
);

DROP TEMPORARY TABLE IF EXISTS temp_bad_controls;

-- ============================================================================
-- STEP 2: PROPAGATE CONTROLLERS TO DUALPATH MACHINES
-- If Machine A is controlled by PC, and Machine A has dualpath to Machine B,
-- then Machine B should also be controlled by PC
-- ============================================================================

-- Find dualpath machines missing controller relationships
SELECT
    'MISSING CONTROLLER' AS issue,
    m1.machinenumber AS machine_with_controller,
    pc.hostname AS controller_pc,
    m2.machinenumber AS dualpath_machine_missing_controller
FROM machinerelationships ctrl
JOIN machines m1 ON ctrl.related_machineid = m1.machineid
JOIN machines pc ON ctrl.machineid = pc.machineid
JOIN machinerelationships dp ON m1.machineid = dp.machineid
JOIN machines m2 ON dp.related_machineid = m2.machineid
JOIN relationshiptypes rt_ctrl ON ctrl.relationshiptypeid = rt_ctrl.relationshiptypeid
JOIN relationshiptypes rt_dp ON dp.relationshiptypeid = rt_dp.relationshiptypeid
WHERE rt_ctrl.relationshiptype = 'Controls'
AND rt_dp.relationshiptype = 'Dualpath'
AND ctrl.isactive = 1
AND dp.isactive = 1
AND NOT EXISTS (
    SELECT 1 FROM machinerelationships ctrl2
    WHERE ctrl2.machineid = pc.machineid
    AND ctrl2.related_machineid = m2.machineid
    AND ctrl2.relationshiptypeid = ctrl.relationshiptypeid
    AND ctrl2.isactive = 1
);

-- Create the missing controller relationships
INSERT INTO machinerelationships (machineid, related_machineid, relationshiptypeid, isactive)
SELECT DISTINCT
    pc.machineid AS machineid,
    m2.machineid AS related_machineid,
    ctrl.relationshiptypeid,
    1 AS isactive
FROM machinerelationships ctrl
JOIN machines m1 ON ctrl.related_machineid = m1.machineid
JOIN machines pc ON ctrl.machineid = pc.machineid
JOIN machinerelationships dp ON m1.machineid = dp.machineid
JOIN machines m2 ON dp.related_machineid = m2.machineid
JOIN relationshiptypes rt_ctrl ON ctrl.relationshiptypeid = rt_ctrl.relationshiptypeid
JOIN relationshiptypes rt_dp ON dp.relationshiptypeid = rt_dp.relationshiptypeid
WHERE rt_ctrl.relationshiptype = 'Controls'
AND rt_dp.relationshiptype = 'Dualpath'
AND ctrl.isactive = 1
AND dp.isactive = 1
AND NOT EXISTS (
    SELECT 1 FROM machinerelationships ctrl2
    WHERE ctrl2.machineid = pc.machineid
    AND ctrl2.related_machineid = m2.machineid
    AND ctrl2.relationshiptypeid = ctrl.relationshiptypeid
    AND ctrl2.isactive = 1
);

-- ============================================================================
-- VERIFICATION
-- ============================================================================

-- Show all Controls relationships (should be PC -> Equipment)
SELECT
    'CONTROLS RELATIONSHIPS' AS type,
    pc.hostname AS pc_hostname,
    pc.machinenumber AS pc_machinenumber,
    '-> Controls ->' AS direction,
    equip.machinenumber AS equipment_number,
    equip.hostname AS equipment_hostname
FROM machinerelationships mr
JOIN machines pc ON mr.machineid = pc.machineid
JOIN machines equip ON mr.related_machineid = equip.machineid
JOIN relationshiptypes rt ON mr.relationshiptypeid = rt.relationshiptypeid
WHERE rt.relationshiptype = 'Controls'
AND mr.isactive = 1
ORDER BY pc.hostname, equip.machinenumber;

SELECT 'Fix complete!' AS status;