package notion

import (
	"context"
	"errors"
	"fmt"
	"log/slog"

	"github.com/jomei/notionapi"
)

var client *notionapi.Client

func Init(token string) {
	client = notionapi.NewClient(notionapi.Token(token))
}

func GetClient() *notionapi.Client {
	return client
}

func GetTableRows(tableId string, numberOfRows int, startFromId string) ([]notionapi.TableRowBlock, error) {
	if client == nil {
		return nil, errors.New("notion client not initialized")
	}
	var rows []notionapi.TableRowBlock
	var nextNumberToGet int
	if numberOfRows > 100 {
		nextNumberToGet = 100
	} else {
		nextNumberToGet = numberOfRows
	}
	for numberOfRows > 0 {
		block, err := client.Block.GetChildren(context.Background(), notionapi.BlockID(tableId), &notionapi.Pagination{
			StartCursor: notionapi.Cursor(startFromId),
			PageSize:    nextNumberToGet,
		})
		if err != nil {
			return nil, err
		}
		for _, block := range block.Results {
			if block.GetType().String() == "table_row" {
				tableRow, ok := block.(*notionapi.TableRowBlock)
				if !ok {
					slog.Error("Notion.GetTableRows Failed to cast block to table row")
					return nil, errors.New("Notion.GetTableRows failed to cast block to table row")
				}
				rows = append(rows, *tableRow)
			} else {
				slog.Error(fmt.Sprintf("Block ID %s is not a table row", block.GetID()))
				return nil, errors.New("Notion.GetAllTableRows block ID is not a table row")
			}
		}
		numberOfRows -= nextNumberToGet
		if numberOfRows > 100 {
			nextNumberToGet = 100
		} else {
			nextNumberToGet = numberOfRows
		}
	}
	return rows, nil
}

func GetAllTableRows(tableId string) ([]notionapi.TableRowBlock, error) {
	if client == nil {
		return nil, errors.New("notion client not initialized")
	}
	rows := []notionapi.TableRowBlock{}
	nextCursor := ""
	hasMore := true
	for hasMore {
		blockChildren, err := client.Block.GetChildren(context.Background(), notionapi.BlockID(tableId), &notionapi.Pagination{
			StartCursor: notionapi.Cursor(nextCursor),
			PageSize:    100,
		})
		if err != nil {
			return nil, err
		}
		for _, block := range blockChildren.Results {
			if block.GetType().String() == "table_row" {
				tableRow, ok := block.(*notionapi.TableRowBlock)
				if !ok {
					slog.Error("Notion.GetAllTableRows Failed to cast block to table row")
					return nil, errors.New("Notion.GetAllTableRows failed to cast block to table row")
				}
				rows = append(rows, *tableRow)
			} else {
				slog.Error(fmt.Sprintf("Block ID %s is not a table row", block.GetID()))
				return nil, errors.New("Notion.GetAllTableRows block ID is not a table row")
			}
		}
		nextCursor = blockChildren.NextCursor
		hasMore = blockChildren.HasMore
	}
	return rows, nil
}

func WriteTableRow(content []string, tableId string, after string) (string, error) {
	if client == nil {
		return "", errors.New("notion client not initialized")
	}
	rich := [][]notionapi.RichText{}
	for _, c := range content {
		rich = append(rich, []notionapi.RichText{
			{
				Type: "text",
				Text: &notionapi.Text{
					Content: c,
				},
			},
		})
	}
	tableRow := notionapi.TableRowBlock{
		BasicBlock: notionapi.BasicBlock{
			Object: "block",
			Type:   "table_row",
		},
		TableRow: notionapi.TableRow{
			Cells: rich,
		},
	}

	res, err := client.Block.AppendChildren(context.Background(), notionapi.BlockID(tableId), &notionapi.AppendBlockChildrenRequest{
		After:    notionapi.BlockID(after),
		Children: []notionapi.Block{tableRow},
	})

	return res.Results[0].GetID().String(), err
}