CREATE TABLE `battery_groups` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`brand_id` integer NOT NULL,
	`type_id` integer NOT NULL,
	`available_count` integer DEFAULT 0 NOT NULL,
	`charging_count` integer DEFAULT 0 NOT NULL,
	`notes` text,
	`created_at` text DEFAULT (datetime('now')),
	`updated_at` text DEFAULT (datetime('now')),
	FOREIGN KEY (`brand_id`) REFERENCES `brands`(`id`) ON UPDATE no action ON DELETE no action,
	FOREIGN KEY (`type_id`) REFERENCES `battery_types`(`id`) ON UPDATE no action ON DELETE no action
);
--> statement-breakpoint
CREATE UNIQUE INDEX `brand_type_idx` ON `battery_groups` (`brand_id`,`type_id`);--> statement-breakpoint
CREATE TABLE `battery_types` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`name` text NOT NULL,
	`is_custom` integer DEFAULT false,
	`created_at` text DEFAULT (datetime('now'))
);
--> statement-breakpoint
CREATE UNIQUE INDEX `battery_types_name_unique` ON `battery_types` (`name`);--> statement-breakpoint
CREATE TABLE `brands` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`name` text NOT NULL,
	`created_at` text DEFAULT (datetime('now'))
);
--> statement-breakpoint
CREATE UNIQUE INDEX `brands_name_unique` ON `brands` (`name`);--> statement-breakpoint
CREATE TABLE `device_batteries` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`device_id` integer NOT NULL,
	`battery_group_id` integer NOT NULL,
	`quantity` integer DEFAULT 1 NOT NULL,
	`assigned_at` text DEFAULT (datetime('now')),
	FOREIGN KEY (`device_id`) REFERENCES `devices`(`id`) ON UPDATE no action ON DELETE cascade,
	FOREIGN KEY (`battery_group_id`) REFERENCES `battery_groups`(`id`) ON UPDATE no action ON DELETE no action
);
--> statement-breakpoint
CREATE UNIQUE INDEX `device_battery_idx` ON `device_batteries` (`device_id`,`battery_group_id`);--> statement-breakpoint
CREATE TABLE `devices` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`name` text NOT NULL,
	`description` text,
	`created_at` text DEFAULT (datetime('now')),
	`updated_at` text DEFAULT (datetime('now'))
);