filter

var Fields = map[string]Field{
	"status": {
		Name: "status",
		Type: "enum",
		Extract: func(ub api.UserBook) any {
			return statusIDToName(ub.StatusID)
		},
	},
	"owned": {
		Name: "owned",
		Type: "boolean",
		Extract: func(ub api.UserBook) any {
			return ub.Owned
		},
	},
	"rating": {
		Name: "rating",
		Type: "number",
		Extract: func(ub api.UserBook) any {
			return ub.Rating
		},
	},
	"year": {
		Name: "year",
		Type: "number",
		Extract: func(ub api.UserBook) any {
			if len(ub.DateAdded) >= 4 {
				y, err := strconv.Atoi(ub.DateAdded[:4])
				if err == nil {
					return y
				}
			}
			return 0
		},
	},
	"pages": {
		Name: "pages",
		Type: "number",
		Extract: func(ub api.UserBook) any {
			if ub.Edition != nil && ub.Edition.Pages > 0 {
				return ub.Edition.Pages
			}
			return ub.Book.Pages
		},
	},
	"added": {
		Name: "added",
		Type: "date",
		Extract: func(ub api.UserBook) any {
			return ub.DateAdded
		},
	},
	"title": {
		Name: "title",
		Type: "string",
		Extract: func(ub api.UserBook) any {
			return ub.Book.Title
		},
	},
	"author": {
		Name: "author",
		Type: "string",
		Extract: func(ub api.UserBook) any {
			var authors []string
			for _, c := range ub.Book.Contributions {
				authors = append(authors, c.Author.Name)
			}
			return strings.Join(authors, ", ")
		},
	},
}