package depot

import (
	"strconv"
	"time"
)

type Config struct {
	CDNBase        string
	StorageHost    string
	StorageZone    string
	ReadKey        string
	WriteKey       string
	ProbeJobs      int
	Jobs           int
	ConnectTimeout time.Duration
	ProbeMaxTime   time.Duration
	ConfirmRetries int
	ConfirmMax     int
}

func LoadConfig(getenv func(string) string) Config {
	cfg := Config{
		CDNBase:        "https://cdn-a7f3k9.westgate.pw",
		StorageZone:    "sow-assets-depot",
		ProbeJobs:      16,
		Jobs:           16,
		ConnectTimeout: 10 * time.Second,
		ProbeMaxTime:   30 * time.Second,
		ConfirmRetries: 3,
		ConfirmMax:     200,
	}

	// DEPOT_CDN_BASE || BUNNY_CDN_BASE
	if v := getenv("DEPOT_CDN_BASE"); v != "" {
		cfg.CDNBase = v
	} else if v := getenv("BUNNY_CDN_BASE"); v != "" {
		cfg.CDNBase = v
	}

	// BUNNY_STORAGE_HOST (no default)
	cfg.StorageHost = getenv("BUNNY_STORAGE_HOST")

	// BUNNY_STORAGE_ZONE (default "sow-assets-depot")
	if v := getenv("BUNNY_STORAGE_ZONE"); v != "" {
		cfg.StorageZone = v
	}

	// BUNNY_STORAGE_PASSWORD
	cfg.WriteKey = getenv("BUNNY_STORAGE_PASSWORD")

	// BUNNY_STORAGE_READ_PASSWORD || BUNNY_STORAGE_PASSWORD
	if v := getenv("BUNNY_STORAGE_READ_PASSWORD"); v != "" {
		cfg.ReadKey = v
	} else {
		cfg.ReadKey = cfg.WriteKey
	}

	// DEPOT_PROBE_JOBS (default 16)
	if v := getenv("DEPOT_PROBE_JOBS"); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			cfg.ProbeJobs = i
		}
	}

	// DEPOT_JOBS (default 16)
	if v := getenv("DEPOT_JOBS"); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			cfg.Jobs = i
		}
	}

	// DEPOT_CONNECT_TIMEOUT (default 10s)
	if v := getenv("DEPOT_CONNECT_TIMEOUT"); v != "" {
		if d, err := time.ParseDuration(v + "s"); err == nil {
			cfg.ConnectTimeout = d
		}
	}

	// DEPOT_PROBE_MAX_TIME (default 30s)
	if v := getenv("DEPOT_PROBE_MAX_TIME"); v != "" {
		if d, err := time.ParseDuration(v + "s"); err == nil {
			cfg.ProbeMaxTime = d
		}
	}

	// DEPOT_CONFIRM_RETRIES (default 3)
	if v := getenv("DEPOT_CONFIRM_RETRIES"); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			cfg.ConfirmRetries = i
		}
	}

	// DEPOT_CONFIRM_MAX (default 200, 0 = unlimited)
	if v := getenv("DEPOT_CONFIRM_MAX"); v != "" {
		if i, err := strconv.Atoi(v); err == nil {
			cfg.ConfirmMax = i
		}
	}

	return cfg
}