package pixiv

import (
	"encoding/json"
	"fmt"
	"log"
)

//GetBookmarks .
func (p *Pixiv) GetBookmarks(userID string) (illusts []Illust, err error) {
	type ajaxBody struct {
		Works []struct {
			ID string `json:"id"`
		} `json:"works"`
		Total int `json:"total"`
	}
	offset := 0
	for {
		req := fmt.Sprintf("https://www.pixiv.net/ajax/user/%s/illusts/bookmarks?tag=&offset=%d&limit=%d&rest=show&lang=en", userID, offset, p.ItemsPerRequest)
		rawAjaxBody, err := p.ajaxRequest(req)
		if err != nil {
			return nil, err
		}
		var body ajaxBody
		err = json.Unmarshal(rawAjaxBody, &body)
		if err != nil {
			return nil, err
		}
		for _, illust := range body.Works {
			illusts = append(illusts, Illust{ID: illust.ID, complited: false})
		}
		if len(illusts) < body.Total {
			offset = len(illusts)
			log.Printf("Fetched %d/%d bookmarks", offset, body.Total)
			continue
		} else {
			log.Printf("Fetched all %d bookmarks of user %s", offset, userID)
			break
		}
	}
	return
}

//GetFollows .
func (p *Pixiv) GetFollows(userID string) (users []User, err error) {
	type ajaxBody struct {
		Users []User `json:"users"`
		Total int    `json:"total"`
	}
	offset := 0
	for {
		req := fmt.Sprintf("https://www.pixiv.net/ajax/user/%s/following?offset=%d&limit=%d&rest=show&tag=&lang=en", userID, offset, p.ItemsPerRequest)
		rawAjaxBody, err := p.ajaxRequest(req)
		if err != nil {
			return nil, err
		}
		var body ajaxBody
		err = json.Unmarshal(rawAjaxBody, &body)
		if err != nil {
			return nil, err
		}
		users = append(users, body.Users[:]...)
		if len(users) < body.Total {
			offset = len(users)
			log.Printf("Fetched %d/%d follows", offset, body.Total)
			continue
		} else {
			log.Printf("Fetched all %d follows of user %s", offset, userID)
			break
		}
	}
	return
}

//GetIllust .
func (p *Pixiv) GetIllust(illustID string) (r Illust, err error) {
	req := fmt.Sprintf("https://www.pixiv.net/ajax/illust/%s?lang=en", illustID)
	apiResp, err := p.ajaxRequest(req)
	if err != nil {
		return
	}
	err = json.Unmarshal(apiResp, &r)
	if err != nil {
		log.Printf("Unmarshaling of api response returned an error: %s", err.Error())
		return
	}
	if r.PageCount > 1 {
		req := fmt.Sprintf("https://www.pixiv.net/ajax/illust/%s/pages?lang=en", illustID)
		apiResp, err := p.ajaxRequest(req)
		if err != nil {
			return Illust{}, err
		}
		err = json.Unmarshal(apiResp, &r.Pages)
		if err != nil {
			log.Printf("Unmarshaling of api response returned an error: %s", err.Error())
			return Illust{}, err
		}
	} else {
		var page IllustPage
		page.URLs = r.URLs
		page.Width = r.Width
		page.Height = r.Height
		r.Pages = append(r.Pages, page)
	}
	return
}

//GetUserIllustsID .
func (p *Pixiv) GetUserIllustsID(userID string) (illusts []Illust, err error) {
	type ajaxBody struct {
		Illusts map[string]interface{} `json:"illusts"`
	}
	var body ajaxBody
	req := fmt.Sprintf("https://www.pixiv.net/ajax/user/%s/profile/all?lang=en", userID)
	rawAjaxBody, err := p.ajaxRequest(req)
	if err != nil {
		return
	}
	err = json.Unmarshal(rawAjaxBody, &body)
	if err != nil {
		return
	}

	for ID := range body.Illusts {
		illusts = append(illusts, Illust{ID: ID, complited: false})
	}
	return
}

//ComplateIllust .
func (p *Pixiv) ComplateIllust(illust *Illust) (err error) {
	*illust, err = p.GetIllust(illust.ID)
	if err != nil {
		return
	}
	illust.complited = true
	return
}

//ComplateIllustMultiple .
func (p *Pixiv) ComplateIllustMultiple(illusts *[]Illust) (err error) {
	for i, illust := range *illusts {
		(*illusts)[i], err = p.GetIllust(illust.ID)
		if err != nil {
			return err
		}
		(*illusts)[i].complited = true
	}
	return
}

//Complited .
func (i *Illust) Complited() bool {
	return i.complited
}