package api

import (
	"encoding/json"
	"errors"
	"path"

	"srs.epita.fr/fic-server/admin/sync"
	"srs.epita.fr/fic-server/libfic"
	"srs.epita.fr/fic-server/settings"

	"github.com/julienschmidt/httprouter"
)

func init() {
	router.GET("/api/settings-ro.json", apiHandler(getROSettings))
	router.GET("/api/settings.json", apiHandler(getSettings))
	router.PUT("/api/settings.json", apiHandler(saveSettings))

	router.POST("/api/reset", apiHandler(reset))
}

func getROSettings(_ httprouter.Params, body []byte) (interface{}, error) {
	syncMtd := "Disabled"
	if sync.GlobalImporter != nil {
		syncMtd = sync.GlobalImporter.Kind()
	}

	return map[string]interface{}{
		"sync": syncMtd,
	}, nil
}

func getSettings(_ httprouter.Params, body []byte) (interface{}, error) {
	return settings.ReadSettings(path.Join(settings.SettingsDir, settings.SettingsFile))
}

func saveSettings(_ httprouter.Params, body []byte) (interface{}, error) {
	var config settings.FICSettings
	if err := json.Unmarshal(body, &config); err != nil {
		return nil, err
	}

	if err := settings.SaveSettings(path.Join(settings.SettingsDir, settings.SettingsFile), config); err != nil {
		return nil, err
	} else {
		ApplySettings(config)
		return config, err
	}
}

func ApplySettings(config settings.FICSettings) {
	fic.PartialValidation = config.PartialValidation
	fic.UnlockedChallenges = !config.EnableExerciceDepend
	fic.FirstBlood = config.FirstBlood
	fic.SubmissionCostBase = config.SubmissionCostBase
	fic.HintCoefficient = config.HintCurCoefficient
	fic.WChoiceCoefficient = config.WChoiceCurCoefficient
	fic.SubmissionCostBase = config.SubmissionCostBase
	fic.SubmissionUniqueness = config.SubmissionUniqueness
}

func reset(_ httprouter.Params, body []byte) (interface{}, error) {
	var m map[string]string
	if err := json.Unmarshal(body, &m); err != nil {
		return nil, err
	}

	if t, ok := m["type"]; !ok {
		return nil, errors.New("Field type not found")
	} else if t == "teams" {
		return true, fic.ResetTeams()
	} else if t == "challenges" {
		return true, fic.ResetExercices()
	} else if t == "game" {
		return true, fic.ResetGame()
	} else {
		return nil, errors.New("Unknown reset type")
	}
}