package main

import (
	"context"
	"net/http"
	"time"

	"forge.cadoles.com/Cadoles/daddy/internal/model"
	"forge.cadoles.com/Cadoles/daddy/internal/voter"

	"github.com/wader/gormstore"

	"forge.cadoles.com/Cadoles/daddy/internal/auth"
	"forge.cadoles.com/Cadoles/daddy/internal/orm"

	"gitlab.com/wpetit/goweb/logger"

	"forge.cadoles.com/Cadoles/daddy/internal/config"
	oidc "forge.cadoles.com/wpetit/goweb-oidc"
	"github.com/pkg/errors"
	"gitlab.com/wpetit/goweb/service"
	"gitlab.com/wpetit/goweb/service/build"
	"gitlab.com/wpetit/goweb/service/session"
	"gitlab.com/wpetit/goweb/session/gorilla"
)

func getServiceContainer(ctx context.Context, conf *config.Config) (*service.Container, error) {
	// Initialize and configure service container
	ctn := service.NewContainer()

	ctn.Provide(build.ServiceName, build.ServiceProvider(ProjectVersion, GitRef, BuildDate))

	// Generate random cookie authentication key if none is set
	if conf.HTTP.CookieAuthenticationKey == "" {
		logger.Info(ctx, "could not find cookie authentication key. generating one...")

		cookieAuthenticationKey, err := gorilla.GenerateRandomBytes(64)
		if err != nil {
			return nil, errors.Wrap(err, "could not generate cookie authentication key")
		}

		conf.HTTP.CookieAuthenticationKey = string(cookieAuthenticationKey)
	}

	// Generate random cookie encryption key if none is set
	if conf.HTTP.CookieEncryptionKey == "" {
		logger.Info(ctx, "could not find cookie encryption key. generating one...")

		cookieEncryptionKey, err := gorilla.GenerateRandomBytes(32)
		if err != nil {
			return nil, errors.Wrap(err, "could not generate cookie encryption key")
		}

		conf.HTTP.CookieEncryptionKey = string(cookieEncryptionKey)
	}

	ctn.Provide(orm.ServiceName, orm.ServiceProvider("postgres", conf.Database.DSN, conf.Debug))

	orm, err := orm.From(ctn)
	if err != nil {
		return nil, errors.WithStack(err)
	}

	// Create and initialize HTTP session service provider
	sessionStore := gormstore.NewOptions(
		orm.DB(),
		gormstore.Options{
			TableName:       "sessions",
			SkipCreateTable: false,
		},
		[]byte(conf.HTTP.CookieAuthenticationKey),
		[]byte(conf.HTTP.CookieEncryptionKey),
	)

	quit := make(chan struct{})
	go sessionStore.PeriodicCleanup(1*time.Hour, quit)

	// Define default cookie options
	sessionStore.SessionOpts.Path = "/"
	sessionStore.SessionOpts.HttpOnly = true
	sessionStore.SessionOpts.MaxAge = conf.HTTP.CookieMaxAge
	sessionStore.SessionOpts.SameSite = http.SameSiteStrictMode

	ctn.Provide(
		session.ServiceName,
		gorilla.ServiceProvider("daddy", sessionStore),
	)

	// Create and expose config service provider
	ctn.Provide(config.ServiceName, config.ServiceProvider(conf))

	provider, err := oidc.NewProvider(ctx, conf.OIDC.IssuerURL)
	if err != nil {
		return nil, errors.Wrap(err, "could not create oidc provider")
	}

	ctn.Provide(oidc.ServiceName, oidc.ServiceProvider(
		oidc.WithCredentials(conf.OIDC.ClientID, conf.OIDC.ClientSecret),
		oidc.WithProvider(provider),
		oidc.WithScopes("email", "openid"),
	))

	ctn.Provide(auth.ServiceName, auth.ServiceProvider(conf.Auth.Rules))

	ctn.Provide(voter.ServiceName, voter.ServiceProvider(
		voter.StrategyUnanimous,
		model.NewDecisionSupportFileVoter(),
		model.NewWorkgroupVoter(),
	))

	return ctn, nil
}