package api

import (
	"net/http"
	"strconv"
	"strings"

	"github.com/owen/vibeproxy/internal/database"
)

type settingsDTO struct {
	ACMEEmail             string   `json:"acme_email"`
	ACMEStaging           bool     `json:"acme_staging"`
	ACMERenewalWindowDays int      `json:"acme_renewal_window_days"`
	CertStoragePath       string   `json:"cert_storage_path"`
	LogRetentionDays      int      `json:"log_retention_days"`
	TrustedProxyCIDRs     []string `json:"trusted_proxy_cidrs"`
	BackupEnabled         bool     `json:"backup_enabled"`
	BackupIntervalHours   int      `json:"backup_interval_hours"`
	BackupRetentionCount  int      `json:"backup_retention_count"`
	BackupPath            string   `json:"backup_path"`
}

func (a *API) getSettings(w http.ResponseWriter, r *http.Request) {
	s := a.store.Current().Settings
	writeJSON(w, http.StatusOK, settingsDTO{
		ACMEEmail:             s.ACMEEmail,
		ACMEStaging:           s.ACMEStaging,
		ACMERenewalWindowDays: s.ACMERenewalWindowDays,
		CertStoragePath:       s.CertStoragePath,
		LogRetentionDays:      s.LogRetentionDays,
		TrustedProxyCIDRs:     s.TrustedProxyCIDRs,
		BackupEnabled:         s.BackupEnabled,
		BackupIntervalHours:   s.BackupIntervalHours,
		BackupRetentionCount:  s.BackupRetentionCount,
		BackupPath:            s.BackupPath,
	})
}

func (a *API) updateSettings(w http.ResponseWriter, r *http.Request) {
	var dto settingsDTO
	if !decodeJSON(w, r, &dto) {
		return
	}
	kv := map[string]string{
		"acme_email":               dto.ACMEEmail,
		"acme_staging":             strconv.FormatBool(dto.ACMEStaging),
		"acme_renewal_window_days": strconv.Itoa(dto.ACMERenewalWindowDays),
		"cert_storage_path":        dto.CertStoragePath,
		"log_retention_days":       strconv.Itoa(dto.LogRetentionDays),
		"trusted_proxy_cidrs":      strings.Join(dto.TrustedProxyCIDRs, ","),
		"backup_enabled":           strconv.FormatBool(dto.BackupEnabled),
		"backup_interval_hours":    strconv.Itoa(dto.BackupIntervalHours),
		"backup_retention_count":   strconv.Itoa(dto.BackupRetentionCount),
		"backup_path":              dto.BackupPath,
	}
	for k, v := range kv {
		if err := database.SetSetting(a.db, k, v); err != nil {
			writeError(w, http.StatusInternalServerError, err.Error())
			return
		}
	}
	a.reload(r)
	audit(a.db, r, "settings_changed", "settings", "")
	writeJSON(w, http.StatusOK, dto)
}