package server

import (
	"encoding/json"
	"net/http"
	"strconv"
)

// Each user's look of the panel (Аккаунт › Вид), kept on the server so it
// is the same on every device: where a tab's icons go, the terminal's font
// size, a compact file list, the time column, animations, and whether a
// terminal or file pane opened «Здесь» starts in the active pane's folder.
type viewPrefs struct {
	TabIcons string `json:"tabIcons,omitempty"` // left (default), right, hide
	TermFont int    `json:"termFont,omitempty"` // 11-20; 0: the default
	Compact  bool   `json:"compact,omitempty"`  // denser file lists
	FileTime string `json:"fileTime,omitempty"` // show (default), hide
	Motion   string `json:"motion,omitempty"`   // on (default), off
	OpenHere string `json:"openHere,omitempty"` // on (default), off
}

func prefsKey(id int64) string { return "prefs_" + strconv.FormatInt(id, 10) }

// clean keeps known values only.
func (p viewPrefs) clean() viewPrefs {
	if p.TabIcons != "right" && p.TabIcons != "hide" {
		p.TabIcons = ""
	}
	if p.TermFont < 11 || p.TermFont > 20 {
		p.TermFont = 0
	}
	if p.FileTime != "hide" {
		p.FileTime = ""
	}
	if p.Motion != "off" {
		p.Motion = ""
	}
	if p.OpenHere != "off" {
		p.OpenHere = ""
	}
	return p
}

func (s *Server) prefs(id int64) viewPrefs {
	var p viewPrefs
	if v, _ := s.db.GetConfig(prefsKey(id)); v != "" {
		_ = json.Unmarshal([]byte(v), &p)
	}
	return p.clean()
}

// GET /api/panel/account/prefs
func (s *Server) handlePrefs(w http.ResponseWriter, r *http.Request) {
	writeJSON(w, s.prefs(s.currentAdmin(r).ID))
}

// POST /api/panel/account/prefs - the whole set.
func (s *Server) handlePrefsSet(w http.ResponseWriter, r *http.Request) {
	var p viewPrefs
	if err := json.NewDecoder(http.MaxBytesReader(w, r.Body, 4<<10)).Decode(&p); err != nil {
		writeJSON(w, map[string]any{"ok": false, "error": "плохой запрос"})
		return
	}
	b, _ := json.Marshal(p.clean())
	_ = s.db.SetConfig(prefsKey(s.currentAdmin(r).ID), string(b))
	writeJSON(w, map[string]any{"ok": true})
}