// This API currently manages all user entities to be managed. This allows users of the service to change required entities and processes.
//
// The entities in question:
//
// - Client - A client is a single client of the Doczy project, all configurations and clients for a client will be in reference to the respective client.
//
// - Collector - A collector specifies document processing settings for a given client.
//
// - Sample - A sample is a subset of documents to be used for testing. When it is active a client will only process documents in the sample.
//
// - Export - An export is a manually started process which outputs the results for a client to a given location.
//
// Note: Query functionality has been removed from this API. See remove_query_plan.md for details.
package main

import (
	"context"
	"fmt"
	"log/slog"
	"os"

	queryapi "queryorchestration/api/queryAPI"
	"queryorchestration/internal/backgroundtask"
	"queryorchestration/internal/client"
	clientupdate "queryorchestration/internal/client/update"
	"queryorchestration/internal/cognitoauth"
	"queryorchestration/internal/collector"
	collectorset "queryorchestration/internal/collector/set"
	"queryorchestration/internal/document"
	documentbatch "queryorchestration/internal/document/batch"
	documentdownload "queryorchestration/internal/document/download"
	documentupload "queryorchestration/internal/document/upload"
	"queryorchestration/internal/eula"
	"queryorchestration/internal/export"
	"queryorchestration/internal/fieldextraction"
	"queryorchestration/internal/folder"
	"queryorchestration/internal/label"
	"queryorchestration/internal/server/api"
	"queryorchestration/internal/serviceconfig"
	awsc "queryorchestration/internal/serviceconfig/aws"
	"queryorchestration/internal/serviceconfig/build"
	"queryorchestration/internal/serviceconfig/objectstore"
	"queryorchestration/internal/serviceconfig/queue/clientsync"
	"queryorchestration/internal/uisettings"
	"queryorchestration/internal/usermanagement"

	"github.com/aws/aws-sdk-go-v2/service/cognitoidentityprovider"
	"github.com/getkin/kin-openapi/openapi3"
	_ "github.com/lib/pq"
)

type QueryAPIConfig struct {
	api.BaseConfig
	clientsync.ClientSyncConfig
	objectstore.ObjectStoreConfig
	BackgroundRunner *backgroundtask.Runner
}

func main() {
	// Print version information before any environment checks
	build.PrintVersionInfo("queryAPI")

	ctx := context.Background()

	cfg := &QueryAPIConfig{}

	cfg.RegisterHandlersFunc = func() (*openapi3.T, error) {
		exp := export.New()
		col := collector.New(cfg)
		colupdate := collectorset.New(cfg, &collectorset.Services{
			Collector: col,
		})
		cli := client.New(cfg)
		cliUpdate := clientupdate.New(cfg, &clientupdate.Services{
			Client: cli,
		})
		doc := document.New(cfg)
		docup := documentupload.New(cfg)
		docdownload := documentdownload.New(cfg)
		docbatch := documentbatch.New(cfg)
		fieldext := fieldextraction.New(cfg)
		fld := folder.New(cfg)
		lbl := label.New(cfg)
		eul := eula.New(cfg)
		uiSvc := uisettings.New(cfg)

		services := &queryapi.Services{
			Export:           exp,
			Collector:        col,
			CollectorSet:     colupdate,
			Client:           cli,
			ClientUpdate:     cliUpdate,
			Document:         doc,
			DocumentUpload:   docup,
			DocumentDownload: docdownload,
			DocumentBatch:    docbatch,
			UISettings:       uiSvc,
			FieldExtraction:  fieldext,
			Folder:           fld,
			Label:            lbl,
			Eula:             eul,
		}

		cons := queryapi.NewControllers(services, cfg)

		queryapi.RegisterHandlers(cfg.Router, cons)

		swagger, err := queryapi.GetSwagger()
		if err != nil {
			return nil, fmt.Errorf("error loading swagger: %w", err)
		}

		return swagger, nil
	}

	// Both of these operations (InitializeConfig and InitializeAuthConfig)
	// would be better off in one function but since there are services
	// that need the config but do not use auth we will keep them separate for now.

	// This must be done before the rbac.InitializeAuthProvider
	errInitializingConfig := serviceconfig.InitializeConfig(cfg)
	if errInitializingConfig != nil {
		slog.Error(errInitializingConfig.Error())
		os.Exit(1)
	}

	// Authentication specific config.
	cfg.BaseURL = fmt.Sprintf("%s:%d", cfg.BaseURL, cfg.Port)
	errorInitializingAuthConfig := cfg.InitializeAuthConfig(cfg.BaseURL, cfg.GetLogger())
	fmt.Printf("base url after InitializeAuthConfig: %s\n", cfg.BaseURL)
	// join initErr with errorInitializingAuthConfig
	if errorInitializingAuthConfig != nil {
		slog.Error(errorInitializingAuthConfig.Error())
		os.Exit(1)
	}

	// Validate Permit.io configuration before starting server
	if err := cognitoauth.ValidatePermitIOConfiguration(); err != nil {
		slog.Error("Permit.io configuration validation failed", "error", err)
		os.Exit(1)
	}

	// Create Cognito SDK client for environment attribute registration and middleware use.
	// This client is created once and reused for the lifetime of the process.
	awsCfg, err := awsc.GetAWSConfig(ctx)
	if err != nil {
		slog.Error("Failed to load AWS config for Cognito client", "error", err)
		os.Exit(1)
	}
	cognitoClient := cognitoidentityprovider.NewFromConfig(awsCfg)

	// Ensure the custom:environment_id attribute is registered on the Cognito user pool.
	// This is safe to call on every startup (idempotent). Failure is non-fatal because
	// the attribute may already exist or the environment may not support this API (e.g. LocalStack).
	if err := usermanagement.EnsureEnvironmentIDAttribute(ctx, cognitoClient, cfg.GetAuthUserPoolID(), cfg.GetLogger()); err != nil {
		cfg.GetLogger().Warn("Failed to ensure Cognito environment_id attribute", "error", err)
	} else {
		cfg.GetLogger().Info("Cognito custom attribute custom:environment_id is registered")
	}

	// Initialize S3 client before creating the server (needed for background worker)
	err = cfg.SetStoreClient(ctx)
	if err != nil {
		slog.Error(err.Error())
		os.Exit(1)
	}

	server, err := api.New(ctx, cfg)
	if err != nil {
		slog.Error(err.Error())
		os.Exit(1)
	}

	server.Listen()
}