import { SB } from '@serafin/schema-builder';
import { z } from 'koa-swagger-decorator';

export const pageIdSchema = z.union([
    z.number().int().min(0).describe('The page ID of the conversation.'),
    z.enum(['current']).describe('The special value "current" to refer to the current page.'),
]).describe('The page ID of the conversation, either as a number or the special value "current".');

export const ConversationDataSchema = z.object({
    conversationId: z.string().describe('The unique identifier for the conversation.'),
    llmApi: z.string().describe('The API id of the LLM used in the conversation.'),
    dialogueCount: z.number().int().min(0).describe('Current dialogue count (from Dify) in the conversation.'),
    currentPage: z.number().int().min(0).describe('The current page ID in the conversation.'),
    createdAt: z.string().describe('The timestamp when the conversation was created.').datetime(),
    updatedAt: z.string().describe('The timestamp when the conversation was last updated.').datetime(),
});

export const CommonApiMessageSchema = z.object({
    role: z.string().describe('The role of the message sender, e.g., "user" or "assistant".'),
    content: z.string().describe('The content of the message.'),
    name: z.string().describe('The name of the message sender, if applicable.').nullable().optional(),
}).passthrough();

export const ConversationDialogueSchema = z.object({
    id: z.number().int().min(0).describe('The unique identifier for the dialogue.'),
    conversationId: z.string().describe('The unique identifier for the conversation.'),
    dialogueCount: z.number().int().min(0).describe('The count of dialogues of this dialogue.'),
    page: z.number().int().min(0).describe('The page number of the dialogue.'),
    messages: z.array(CommonApiMessageSchema).describe('Messages'),
    updatedAt: z.string().describe('The time when the dialogue was last updated.').datetime(),
});

export const ConversationPageSchema = z.object({
    id: z.number().int().min(0).describe('The unique identifier for the page record.'),
    conversationId: z.string().describe('The unique identifier for the conversation.'),
    pageId: z.number().int().min(0).describe('The page number of the conversation.'),
    metadata: z.record(z.any()).describe('Metadata'),
    updatedAt: z.string().describe('The timestamp when the page was last updated.').datetime(),
});

export const ActionRes = z.object({
    success: z.boolean().describe('Indicates whether the action was successful.'),
    message: z.string().describe('A message providing additional information about the action result.'),
    error: z.string().describe('An error message if the action failed.').nullable().optional(),
});
export type ActionResType = z.infer<typeof ActionRes>;

/**
 * 获取对话信息响应体
 */
export const GetConversationInfoRes = ConversationDataSchema;
export type GetConversationInfoResType = z.infer<typeof GetConversationInfoRes>;

/**
 * 获取单轮对话信息响应体
 */
export const GetDialogueInfoRes = ConversationDialogueSchema;
export type GetDialogueInfoResType = z.infer<typeof GetDialogueInfoRes>;

/**
 * 更新对话内容请求体
 */
export const UpdateDialogueMessagesReq = z.object({
    messages: z.array(
        z.object({
            role: z.string().describe('The role of the message sender, e.g., "user" or "assistant".'),
            content: z.string().describe('The content of the message.'),
            name: z.string().describe('The name of the message sender, if applicable.').nullable().optional(),
        }).passthrough()
    ).describe('An array of messages to update the dialogue with.'),
    dialogueCount: z.number().int().min(0).describe('The count of dialogues in the conversation.').nullable().optional(),
});
export type UpdateDialogueMessagesReqType = z.infer<typeof UpdateDialogueMessagesReq>;

export const OverrideDialogueMessagesReq = z.object({
    messages: z.array(CommonApiMessageSchema).describe('An array of messages to update the dialogue with.'),
    dialogueCount: z.number().int().min(0).describe('The count of dialogues in the conversation.'),
});
export type OverrideDialogueMessagesReqType = z.infer<typeof OverrideDialogueMessagesReq>;

export const GetMessageContentQuery = z.object({
    offset: z.string().describe('The number of dialogues to skip. for example, 1 means update the 2nd message of this role.').nullable().optional(),
    offsetEnd: z.string().describe('The number of dialogues to skip from the end. for example, 1 means update the 2nd last message of this role.').nullable().optional(),
}).describe('GetMessageContentQuery');
export type GetMessageContentQueryType = z.infer<typeof GetMessageContentQuery>;

export const GetPageListRes = z.array(
    ConversationPageSchema.omit({ metadata: true })
).describe('GetPageListRes');
export type GetPageListResType = z.infer<typeof GetPageListRes>;

export const GetPageInfoRes = ConversationPageSchema;
export type GetPageInfoResType = z.infer<typeof GetPageInfoRes>;

export const GetPageMetadataRes = z.object({
    metadata: z.record(z.any()).describe('The metadata of the page.'),
}).describe('GetPageMetadataRes');
export type GetPageMetadataResType = z.infer<typeof GetPageMetadataRes>;

export const UpdatePageMetadataReq = z.object({
    metadata: z.record(z.any()).describe('The metadata to update for the page.'),
}).describe('UpdatePageMetadataReq');
export type UpdatePageMetadataReqType = z.infer<typeof UpdatePageMetadataReq>;

export const GetPageMetadataItemRes = z.object({
    key: z.string().describe('The key of the metadata item.'),
    value: z.any().describe('The value of the metadata item.'),
    type: z.enum(['string', 'number', 'boolean', 'object', 'array', 'null']).describe('The type of the metadata item value.'),
    exists: z.boolean().describe('Indicates whether the metadata item exists.'),
}).describe('GetPageMetadataItemRes');
export type GetPageMetadataItemResType = z.infer<typeof GetPageMetadataItemRes>;

export const UpdatePageMetadataItemReq = z.object({
    value: z.any().describe('The new value for the metadata item.'),
    valueIsJson: z.boolean().describe('Indicates whether the value is a JSON string.').default(false),
}).describe('UpdatePageMetadataItemReq');
export type UpdatePageMetadataItemReqType = z.infer<typeof UpdatePageMetadataItemReq>;

export const CreateNewPageReq = z.object({
    metadata: z.record(z.any()).describe('The metadata for the new page.').nullable().optional(),
    inheritMetadata: z.boolean().describe('Whether to inherit metadata from the current page.').default(true),
}).describe('NewPageReq');
export type CreateNewPageReqType = z.infer<typeof CreateNewPageReq>;

export const CreateNewPageRes = z.object({
    pageId: z.number().int().min(0).describe('The ID of the newly created page.'),
}).describe('NewPageRes');
export type CreateNewPageResType = z.infer<typeof CreateNewPageRes>;