Derive device voltages from project settings

src/db/migrations/0019_normalize_project_voltages.sql

@@ -0,0 +1,48 @@
+UPDATE `global_devices`
+SET `voltage_v` = NULL;
+--> statement-breakpoint
+UPDATE `project_devices` AS `pd`
+SET `voltage_v` = CASE
+  WHEN `pd`.`phase_type` = 'three_phase' THEN `p`.`three_phase_voltage_v`
+  ELSE `p`.`single_phase_voltage_v`
+END
+FROM `projects` AS `p`
+WHERE `p`.`id` = `pd`.`project_id`;
+--> statement-breakpoint
+WITH `derived_circuit_voltages` AS (
+  SELECT
+    `c`.`id` AS `circuit_id`,
+    CASE
+      WHEN `cs`.`key` = 'three_phase' THEN `p`.`three_phase_voltage_v`
+      WHEN `cs`.`key` IN ('lighting', 'single_phase') THEN `p`.`single_phase_voltage_v`
+      WHEN EXISTS (
+        SELECT 1
+        FROM `circuit_device_rows` AS `three_phase_row`
+        WHERE `three_phase_row`.`circuit_id` = `c`.`id`
+          AND `three_phase_row`.`phase_type` = 'three_phase'
+      ) AND NOT EXISTS (
+        SELECT 1
+        FROM `circuit_device_rows` AS `other_row`
+        WHERE `other_row`.`circuit_id` = `c`.`id`
+          AND `other_row`.`phase_type` = 'single_phase'
+      ) THEN `p`.`three_phase_voltage_v`
+      ELSE `p`.`single_phase_voltage_v`
+    END AS `derived_voltage`
+  FROM `circuits` AS `c`
+  INNER JOIN `circuit_lists` AS `cl`
+    ON `cl`.`id` = `c`.`circuit_list_id`
+  INNER JOIN `projects` AS `p`
+    ON `p`.`id` = `cl`.`project_id`
+  INNER JOIN `circuit_sections` AS `cs`
+    ON `cs`.`id` = `c`.`section_id`
+)
+UPDATE `circuits`
+SET `voltage` = (
+  SELECT `derived_voltage`
+  FROM `derived_circuit_voltages`
+  WHERE `circuit_id` = `circuits`.`id`
+)
+WHERE `id` IN (
+  SELECT `circuit_id`
+  FROM `derived_circuit_voltages`
+);

src/db/migrations/meta/_journal.json

@@ -134,6 +134,13 @@
       "when": 1785308458789,
       "tag": "0018_fancy_argent",
       "breakpoints": true
+    },
+    {
+      "idx": 19,
+      "version": "6",
+      "when": 1785310907349,
+      "tag": "0019_normalize_project_voltages",
+      "breakpoints": true
     }
   ]
 }