// service_spec_gen — генератор YAML-спеков сервисов из API Nubes.
//
// Читает список сервисов, дёргает API, собирает операции/параметры/MAN,
// пишет один YAML на сервис в resources_yaml/.
package main

import (
	"fmt"
	"os"
	"path/filepath"
	"strings"

	"gopkg.in/yaml.v3"

	"yaml-generator/internal/client"
	"yaml-generator/internal/config"
	"yaml-generator/internal/normalize"
	"yaml-generator/internal/spec"
	"yaml-generator/internal/types"
)

func main() {
	cfg, err := config.Load()
	if err != nil {
		panic(err)
	}

	cli := client.New(cfg.APIEndpoint, cfg.APIToken)

	services := cfg.Services
	if cfg.SingleServiceID > 0 {
		services = []config.ServiceRef{{ID: cfg.SingleServiceID, Name: cfg.SingleServiceName}}
	}

	outputDir := cfg.OutputDir
	if outputDir == "" {
		panic("NUBES_OUTPUT_DIR is required — generated files must go to generated/{stand}/resources_yaml/")
	}
	if err := spec.ValidateOutputDir(outputDir); err != nil {
		panic(err)
	}
	if err := os.MkdirAll(outputDir, 0o755); err != nil {
		panic(err)
	}

	for _, svc := range services {
		if svc.ID <= 0 {
			continue
		}
		info, err := cli.GetService(svc.ID)
		if err != nil {
			fmt.Fprintf(os.Stderr, "WARNING: service %d (%s) skipped: %v\n", svc.ID, svc.Name, err)
			continue
		}
		name := strings.TrimSpace(svc.Name)
		if name == "" {
			name = strings.TrimSpace(info.ShortName)
		}
		if name == "" {
			name = strings.TrimSpace(info.DisplayName)
		}
		name = normalize.ServiceName(name)
		if name == "" {
			name = fmt.Sprintf("service_%d", svc.ID)
		}

		ops, hasSuspend, _, _, err := cli.CollectOperations(info.Operations)
		if err != nil {
			panic(err)
		}

		specYAML := types.ServiceSpec{
			Name:               name,
			ServiceID:          svc.ID,
			ServiceDisplayName: strings.TrimSpace(info.DisplayName),
			ServiceShortName:   strings.TrimSpace(info.ShortName),
			ServiceMan:         strings.TrimSpace(info.Man),
			Lifecycle: types.Lifecycle{
				SuspendOnDestroyDefault:      hasSuspend,
				AdoptExistingOnCreateDefault: false,
			},
			Outputs:    types.OutputSection{Params: spec.DefaultOutputParams()},
			Operations: ops,
		}

		outPath := filepath.Join(outputDir, fmt.Sprintf("%d_%s.yaml", svc.ID, name))
		buf, err := yaml.Marshal(specYAML)
		if err != nil {
			panic(err)
		}
		if err := os.WriteFile(outPath, buf, 0o644); err != nil {
			panic(err)
		}
		fmt.Printf("written %s\n", outPath)
	}
}