package web

import (
	"fmt"
	"html/template"

	"gitea.dooplex.hu/admin/felhom-controller/internal/stacks"
)

// templateFuncMap returns the FuncMap used by all HTML templates.
func (s *Server) templateFuncMap() template.FuncMap {
	return template.FuncMap{
		"stateColor": func(state stacks.ContainerState) string {
			switch state {
			case stacks.StateRunning:
				return "green"
			case stacks.StateStarting:
				return "orange"
			case stacks.StateUnhealthy:
				return "yellow"
			case stacks.StateStopped, stacks.StateExited:
				return "red"
			case stacks.StateRestarting:
				return "yellow"
			default:
				return "gray"
			}
		},
		"stateLabel": func(state stacks.ContainerState) string {
			switch state {
			case stacks.StateRunning:
				return "Fut"
			case stacks.StateStarting:
				return "Indulás..."
			case stacks.StateUnhealthy:
				return "Nem egészséges"
			case stacks.StateStopped, stacks.StateExited:
				return "Leállítva"
			case stacks.StateRestarting:
				return "Újraindítás..."
			case stacks.StateNotDeployed:
				return "Nincs telepítve"
			case stacks.StatePaused:
				return "Szüneteltetve"
			default:
				return "Ismeretlen"
			}
		},
		"stateIcon": func(state stacks.ContainerState) string {
			switch state {
			case stacks.StateRunning:
				return "●"
			case stacks.StateStarting:
				return "◐"
			case stacks.StateUnhealthy:
				return "◑"
			case stacks.StateStopped, stacks.StateExited:
				return "○"
			case stacks.StateRestarting:
				return "◐"
			default:
				return "◌"
			}
		},
		"stateStr": func(state stacks.ContainerState) string {
			return string(state)
		},
		// isOperational returns true for any state where the stack has containers
		// and is not stopped/exited — used by templates for showing action buttons
		"isOperational": func(state stacks.ContainerState) bool {
			switch state {
			case stacks.StateRunning, stacks.StateStarting, stacks.StateUnhealthy, stacks.StateRestarting:
				return true
			default:
				return false
			}
		},
		"logoURL": func(slug string) string {
			return s.cfg.AppLogoURL(slug)
		},
		"logoPNGURL": func(slug string) string {
			return s.cfg.AppLogoPNGURL(slug)
		},
		"appPageURL": func(slug string) string {
			return s.cfg.AppPageURL(slug)
		},
		"usageColor": func(percent float64) string {
			if percent >= 85 {
				return "red"
			}
			if percent >= 70 {
				return "yellow"
			}
			return "green"
		},
		"fmtMB": func(mb uint64) string {
			if mb >= 1024 {
				gb := float64(mb) / 1024.0
				if gb >= 10 {
					return fmt.Sprintf("%.0f GB", gb)
				}
				return fmt.Sprintf("%.1f GB", gb)
			}
			return fmt.Sprintf("%d MB", mb)
		},
		"fmtGB": func(gb float64) string {
			if gb >= 100 {
				return fmt.Sprintf("%.0f GB", gb)
			}
			if gb >= 10 {
				return fmt.Sprintf("%.1f GB", gb)
			}
			return fmt.Sprintf("%.2f GB", gb)
		},
		"subtract": func(a, b int) int {
			r := a - b
			if r < 0 {
				return 0
			}
			return r
		},
		"screenshotURL": func(slug string, index int) string {
			return s.cfg.AppScreenshotURL(slug, index)
		},
		"seq": func(n int) []int {
			result := make([]int, n)
			for i := range result {
				result[i] = i + 1
			}
			return result
		},
	}
}