package bm

import (
	"git.golem15.com/golem15/summercms/modules/pact"
	"git.golem15.com/golem15/summercms/modules/phrasebook"
	"git.golem15.com/golem15/summercms/modules/surf"
	"git.golem15.com/jakub/sm-bm-plugin/controllers/api"
	"gorm.io/gorm"
)

var _ pact.HasRoutes = (*Plugin)(nil)

// APIPrefix is the path prefix of the student API.
const APIPrefix = "/_bm/api/v1"

// Routes declares the student API. Every route needs a golem15.user JWT
// (jwt.auth); students only read, except for their own reading progress.
func (p *Plugin) Routes(r pact.Router) error {
	h := p.handlers()
	r.Group(APIPrefix, surf.Use("jwt.auth", "locale.from-principal"), func(g pact.Router) {
		g.Get("/dashboard", h.Dashboard)
		g.Get("/courses", h.Courses)
		g.Get("/courses/{id}", h.Course)
		g.Where("id", "[0-9]+")
		g.Get("/schedule", h.Schedule)
		g.Get("/meetings", h.Meetings)
		g.Get("/deadlines", h.Deadlines)
		g.Get("/readings", h.Readings)
		g.Put("/readings/{id}/progress", h.MarkRead)
		g.Where("id", "[0-9]+")
		g.Delete("/readings/{id}/progress", h.UnmarkRead)
		g.Where("id", "[0-9]+")
		g.Get("/materials", h.Materials)
		g.Get("/materials/{id}", h.Material)
		g.Where("id", "[0-9]+")
	})
	// The student app: the least specific pattern, so every route above and
	// the admin's keep precedence. It also answers (404) the reserved paths.
	static, err := newStaticHandler(p.app, p.publicFS)
	if err != nil {
		return err
	}
	r.GroupRaw("", nil, func(g pact.Router) {
		g.Get("/{path...}", static.ServeHTTP)
	})
	return nil
}

// handlers builds the API handlers on the application. The database is
// looked up per request, because the binary boots plugins before serve
// publishes it.
func (p *Plugin) handlers() *api.Handlers {
	h := &api.Handlers{
		DB: func() *gorm.DB {
			if p.app == nil {
				return nil
			}
			db, _ := p.app.Lookup[*gorm.DB]()
			return db
		},
		Translator: func() *phrasebook.Translator {
			if p.app == nil {
				return nil
			}
			tr, _ := p.app.Lookup[*phrasebook.Translator]()
			return tr
		},
	}
	if p.app != nil && p.app.Config != nil {
		h.PerPage = p.app.Config.Int("jz.bm.materials_per_page")
		h.DashboardLimit = p.app.Config.Int("jz.bm.dashboard_limit")
	}
	return h
}