package httpapi

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

	"evobgp/internal/db"
	"evobgp/internal/jobs"
	"evobgp/internal/observability"
	"evobgp/internal/repository"
	"evobgp/internal/store"

	"github.com/jackc/pgx/v5/pgxpool"
)

// NewCDNHTTPClient returns the shared HTTP client for CDN and preview fetches (PERF-02 / ERR-03).
func NewCDNHTTPClient() *http.Client {
	return &http.Client{Timeout: 45 * time.Second}
}

// BootstrapWorkers opens the same store.Backend and jobs.Registry as New (without HTTP or bundle keys).
// Used by standalone worker binaries (scheduler, ingest, …) that share PostgreSQL with the API.
func BootstrapWorkers(ctx context.Context, opts Options) (store.Backend, *jobs.Registry, *pgxpool.Pool, error) {
	ctx, cancel := context.WithTimeout(ctx, 60*time.Second)
	defer cancel()

	var backend store.Backend
	var pool *pgxpool.Pool

	if u := strings.TrimSpace(opts.DatabaseURL); u != "" {
		p, err := db.OpenPostgresPool(ctx, u)
		if err != nil {
			return nil, nil, nil, err
		}
		pool = p
		pgbe, err := repository.NewPostgres(ctx, p, opts.SeedDemo)
		if err != nil {
			pool.Close()
			return nil, nil, nil, err
		}
		backend = pgbe
	} else {
		mem := store.NewMemory()
		if opts.SeedDemo {
			mem.SeedDemo()
		}
		backend = mem
	}

	cdnHTTP := NewCDNHTTPClient()
	wk := &jobs.Worker{Store: backend, HTTPClient: cdnHTTP}
	reg := jobs.NewRegistry(wk.Process)
	wk.Registry = reg
	if pool != nil {
		audit := repository.NewJobAuditWriter(pool)
		reg.SetTerminalHook(func(j *jobs.Job) {
			if j == nil {
				return
			}
			st := j.Snapshot()
			status, _ := st["status"].(string)
			var errMsg *string
			if e, ok := st["error"].(string); ok && e != "" {
				errMsg = &e
			}
			audit.MarkTerminal(context.Background(), j.TenantID, j.ID, status, errMsg, time.Now().UTC())
		})
	}
	observability.RegisterStoreBackend(backend)
	return backend, reg, pool, nil
}