import type { ChatMessageTimings, ChatRole, ChatMessageType } from '$lib/types/chat';
import { AttachmentType } from '$lib/enums';

export interface McpServerOverride {
	serverId: string;
	enabled: boolean;
}

export interface DatabaseConversation {
	currNode: string | null;
	id: string;
	lastModified: number;
	name: string;
	mcpServerOverrides?: McpServerOverride[];
	forkedFromConversationId?: string;
}

export interface DatabaseMessageExtraAudioFile {
	type: AttachmentType.AUDIO;
	name: string;
	size?: number;
	base64Data: string;
	mimeType: string;
}

export interface DatabaseMessageExtraImageFile {
	type: AttachmentType.IMAGE;
	name: string;
	size?: number;
	base64Url: string;
}

/**
 * Legacy format from the old UI — pasted content was stored as "context" type
 * @deprecated Use DatabaseMessageExtraTextFile instead
 */
export interface DatabaseMessageExtraLegacyContext {
	type: AttachmentType.LEGACY_CONTEXT;
	name: string;
	size?: number;
	content: string;
}

export interface DatabaseMessageExtraPdfFile {
	type: AttachmentType.PDF;
	base64Data: string;
	name: string;
	size?: number;
	content: string;
	images?: string[];
	processedAsImages: boolean;
}

export interface DatabaseMessageExtraTextFile {
	type: AttachmentType.TEXT;
	name: string;
	size?: number;
	content: string;
}

export interface DatabaseMessageExtraMcpPrompt {
	type: AttachmentType.MCP_PROMPT;
	name: string;
	size?: number;
	serverName: string;
	promptName: string;
	content: string;
	arguments?: Record<string, string>;
}

export interface DatabaseMessageExtraMcpResource {
	type: AttachmentType.MCP_RESOURCE;
	name: string;
	size?: number;
	uri: string;
	serverName: string;
	content: string;
	mimeType?: string;
}

export type DatabaseMessageExtra =
	| DatabaseMessageExtraImageFile
	| DatabaseMessageExtraTextFile
	| DatabaseMessageExtraAudioFile
	| DatabaseMessageExtraPdfFile
	| DatabaseMessageExtraMcpPrompt
	| DatabaseMessageExtraMcpResource
	| DatabaseMessageExtraLegacyContext;

export interface DatabaseMessage {
	id: string;
	convId: string;
	type: ChatMessageType;
	timestamp: number;
	role: ChatRole;
	content: string;
	parent: string | null;
	/**
	 * @deprecated - left for backward compatibility
	 */
	thinking?: string;
	/** Reasoning content produced by the model (separate from visible content) */
	reasoningContent?: string;
	/** Serialized JSON array of tool calls made by assistant messages */
	toolCalls?: string;
	/** Tool call ID for tool result messages (role: 'tool') */
	toolCallId?: string;
	children: string[];
	extra?: DatabaseMessageExtra[];
	timings?: ChatMessageTimings;
	model?: string;
}

export type ExportedConversation = {
	conv: DatabaseConversation;
	messages: DatabaseMessage[];
};

export type ExportedConversations = ExportedConversation | ExportedConversation[];
