CREATE TABLE `character_cards` (
	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
	`slug` text(50) NOT NULL,
	`name` text(100) NOT NULL,
	`avatar` text,
	`description` text,
	`personality` text,
	`scenario` text,
	`first_message` text,
	`example_dialogue` text,
	`system_prompt` text DEFAULT '' NOT NULL,
	`default_model_id` integer,
	`tags` text,
	`is_public` integer DEFAULT 1 NOT NULL,
	`enabled` integer DEFAULT 1 NOT NULL,
	`sort_order` integer DEFAULT 0 NOT NULL,
	`created_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL,
	`updated_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL
);
--> statement-breakpoint
CREATE UNIQUE INDEX `character_cards_slug_unique` ON `character_cards` (`slug`);--> statement-breakpoint
CREATE INDEX `character_cards_enabled_idx` ON `character_cards` (`enabled`);--> statement-breakpoint
CREATE INDEX `character_cards_sort_order_idx` ON `character_cards` (`sort_order`);--> statement-breakpoint
CREATE TABLE `character_messages` (
	`id` text PRIMARY KEY NOT NULL,
	`session_id` text NOT NULL,
	`role` text(20) NOT NULL,
	`content` text DEFAULT '' NOT NULL,
	`sort_order` integer NOT NULL,
	`created_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL,
	FOREIGN KEY (`session_id`) REFERENCES `character_sessions`(`id`) ON UPDATE no action ON DELETE cascade
);
--> statement-breakpoint
CREATE INDEX `idx_character_messages_session_sort` ON `character_messages` (`session_id`,`sort_order`);--> statement-breakpoint
CREATE TABLE `character_sessions` (
	`id` text PRIMARY KEY NOT NULL,
	`card_id` integer,
	`user_id` integer,
	`temp_token` text(64),
	`title` text(100) DEFAULT '新对话' NOT NULL,
	`model_id` integer,
	`last_active_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL,
	`expires_at` integer,
	`deleted_at` integer,
	`created_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL,
	`updated_at` integer DEFAULT (cast((julianday('now') - 2440587.5)*86400000 as integer)) NOT NULL,
	FOREIGN KEY (`card_id`) REFERENCES `character_cards`(`id`) ON UPDATE no action ON DELETE set null,
	FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE cascade
);
--> statement-breakpoint
CREATE INDEX `idx_character_sessions_user_deleted` ON `character_sessions` (`user_id`,`deleted_at`);--> statement-breakpoint
CREATE INDEX `idx_character_sessions_temp_token` ON `character_sessions` (`temp_token`);--> statement-breakpoint
CREATE INDEX `idx_character_sessions_card` ON `character_sessions` (`card_id`);