package mock

import (
	"fmt"
	"io"
	"os"
	"strconv"
	"strings"
	"time"

	"go.jolheiser.com/cabinet/internal/workspace"
)

type Mock struct {
	files  map[string]*File
	tokens map[string]workspace.Token
}

func New() *Mock {
	return &Mock{
		files:  make(map[string]*File),
		tokens: make(map[string]workspace.Token),
	}
}

func (m Mock) List() ([]os.FileInfo, error) {
	files := make([]os.FileInfo, 0)
	for _, file := range m.files {
		files = append(files, file)
	}
	return files, nil
}

func (m Mock) Meta(id string) (workspace.Meta, error) {
	if file, ok := m.files[id]; ok {
		return file.Meta, nil
	}
	return workspace.Meta{}, fmt.Errorf("no file meta found for %s", id)
}

func (m Mock) Read(id string) (io.ReadCloser, error) {
	if file, ok := m.files[id]; ok {
		return io.NopCloser(strings.NewReader(file.Content)), nil
	}
	return nil, fmt.Errorf("no file content found for %s", id)
}

func (m Mock) Add(r io.Reader, meta workspace.Meta) (string, error) {
	content, err := io.ReadAll(r)
	if err != nil {
		return "", err
	}
	id := strconv.Itoa(len(m.files) + 1)
	m.files[id] = &File{
		name:    meta.Name,
		Content: string(content),
		size:    int64(len(content)),
		modTime: time.Now(),
		Meta:    meta,
	}
	return id, nil
}

func (m Mock) Delete(id string) error {
	if _, ok := m.files[id]; ok {
		delete(m.files, id)
		return nil
	}
	return fmt.Errorf("no file found for %s", id)
}

func (m Mock) IsProtected() (bool, error) {
	return len(m.tokens) > 0, nil
}

func (m Mock) Token(key string) (workspace.Token, error) {
	if token, ok := m.tokens[key]; ok {
		return token, nil
	}
	return workspace.Token{}, fmt.Errorf("no token found for %s", key)
}

func (m Mock) AddToken(token workspace.Token) error {
	m.tokens[token.Key] = token
	return nil
}

func (m Mock) DeleteTokens(keys ...string) error {
	for _, key := range keys {
		delete(m.tokens, key)
	}
	return nil
}