package main

import (
	"encoding/json"
	"fmt"
	"net/http"
	"strings"

	"code.gitea.io/sdk/gitea"
	"github.com/charmbracelet/bubbles/key"
	"github.com/charmbracelet/bubbles/list"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

// Activity stores an entry in a gitea user's activity feed.
type Activity struct {
	act_user    *gitea.User
	act_user_id int64
	comment     gitea.Comment
	comment_id  int64
	content     string
	created     string
	id          int64
	is_private  bool
	op_type     string
	ref_name    string
	repo        *gitea.Repository
	repo_id     int64
	user_id     int64
}

// getActivityFeed returns the authenticated user's activity feed.
func getActivityFeed() []Activity {
	feed := []Activity{}
	for _, server := range config.servers {
		client := Servers[server.servername]
		resp, err := http.Get(fmt.Sprintf("%s/api/v1/users/%s/activities/feeds?limit=15&page=1",
			server.url,
			server.username,
		))
		if err != nil {
			println("Failed to make HTTP request")
			continue
		}

		defer resp.Body.Close()
		var data []map[string]interface{}
		err = json.NewDecoder(resp.Body).Decode(&data)
		if err != nil {
			fmt.Println("Error decoding JSON: "+fmt.Sprint(err))
			continue
		}
		for _, obj := range data {
			act_user, _, err := client.GetUserInfo(obj["act_user"].(map[string]interface{})["login"].(string))
			if err != nil {
				fmt.Println("Error getting user: "+fmt.Sprint(err))
				continue
			}
			var comment gitea.Comment
			if obj["comment"] != nil {
				raw_comment := obj["comment"].(map[string]interface{})
				comment = gitea.Comment{
					Body: raw_comment["body"].(string),
					HTMLURL: raw_comment["html_url"].(string),
					ID: int64(raw_comment["id"].(float64)),
					IssueURL: raw_comment["issue_url"].(string),
					OriginalAuthor: raw_comment["original_author"].(string),
					OriginalAuthorID: int64(raw_comment["original_author_id"].(float64)),
				}
			}
			feed = append(feed, Activity{
				// repo: repo,
				act_user: act_user,
				act_user_id: int64(obj["act_user_id"].(float64)),
				comment: comment,
				comment_id: int64(obj["comment_id"].(float64)),
				content: obj["content"].(string),
				created: obj["created"].(string),
				id: int64(obj["id"].(float64)),
				is_private: obj["is_private"].(bool),
				op_type: obj["op_type"].(string),
				ref_name: obj["ref_name"].(string),
				repo_id: int64(obj["repo_id"].(float64)),
				user_id: int64(obj["user_id"].(float64)),
			})
		}
	}
	return feed
}

type listKeyMap struct {
	toggleSpinner    key.Binding
	toggleTitleBar   key.Binding
	toggleStatusBar  key.Binding
	togglePagination key.Binding
	toggleHelpMenu   key.Binding
}

func newListKeyMap() *listKeyMap {
	return &listKeyMap{
		toggleSpinner: key.NewBinding(
			key.WithKeys("s"),
			key.WithHelp("s", "toggle spinner"),
		),
		toggleTitleBar: key.NewBinding(
			key.WithKeys("T"),
			key.WithHelp("T", "toggle title"),
		),
		toggleStatusBar: key.NewBinding(
			key.WithKeys("S"),
			key.WithHelp("S", "toggle status"),
		),
		togglePagination: key.NewBinding(
			key.WithKeys("P"),
			key.WithHelp("P", "toggle pagination"),
		),
		toggleHelpMenu: key.NewBinding(
			key.WithKeys("H"),
			key.WithHelp("H", "toggle help"),
		),
	}
}

type feedviewer struct {
	list list.Model
	feed []Activity
	appStyle lipgloss.Style
	keys listKeyMap
}

func (m feedviewer) Init() tea.Cmd {
	m.appStyle = lipgloss.NewStyle().Padding(1, 2)
	return nil
}

func (m feedviewer) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		h, v := m.appStyle.GetFrameSize()
		m.list.SetSize(msg.Width-h, msg.Height-v)
	case tea.KeyMsg:
		if m.list.FilterState() == list.Filtering {
			break
		}
		switch {
		case key.Matches(msg, m.keys.toggleSpinner):
			return m, m.list.ToggleSpinner()
		case key.Matches(msg, m.keys.toggleTitleBar):
			v := !m.list.ShowTitle()
			m.list.SetShowTitle(v)
			m.list.SetShowFilter(v)
			m.list.SetFilteringEnabled(v)
			return m, nil
		case key.Matches(msg, m.keys.toggleStatusBar):
			m.list.SetShowStatusBar(!m.list.ShowStatusBar())
			return m, nil
		case key.Matches(msg, m.keys.togglePagination):
			m.list.SetShowPagination(!m.list.ShowPagination())
			return m, nil
		case key.Matches(msg, m.keys.toggleHelpMenu):
			m.list.SetShowHelp(!m.list.ShowHelp())
			return m, nil
		default:
			switch msg.String() {
			case "ctrl+c":
				return m, tea.Quit
			}
		}
	}
	newListModel, cmd := m.list.Update(msg)
	m.list = newListModel
	return m, tea.Batch(cmd)
}

func (m feedviewer) View() string {
	return m.appStyle.Render(m.list.View())
}

type item struct {
	Activity
}

func (i item) Title() string {
	switch i.Activity.op_type {
	case "create_issue":
		return fmt.Sprintf("%s created an issue", i.act_user.UserName)
	case "commit_repo":
		var data map[string]interface{}
		if err := json.NewDecoder(strings.NewReader(i.content)).Decode(&data); err != nil {
			return "JSON decode error: "+fmt.Sprint(err)
		}
		commits := data["Commits"].([]interface{})
		commits_text := fmt.Sprintf("%d commit", len(commits))
		if len(commits) > 1 {
			commits_text += "s"
		}
		return fmt.Sprintf("%s pushed %s to %s", i.act_user.UserName, commits_text, i.ref_name)
	case "comment_issue":
		split := strings.Split(i.content, "|")
		issue_num := split[0]
		// comment := strings.TrimPrefix(i.content, issue_num+"|")
		return fmt.Sprintf("%s commented on #%s", i.act_user.UserName, issue_num)
	default:
		return fmt.Sprintf("%s performed an unknown action. (%s)", i.act_user.UserName, i.op_type)
	}
}
func (i item) Description() string {
	switch i.op_type {
	case "commit_repo":
		var data map[string]interface{}
		if err := json.NewDecoder(strings.NewReader(i.content)).Decode(&data); err != nil {
			return "JSON decode error: "+fmt.Sprint(err)
		}
		s := ""
		commits := data["Commits"].([]interface{})
		commit := commits[0].(map[string]interface{})
		s += styles.text.Render(fmt.Sprintf("[%s] ", commit["Sha1"].(string)[0:10])) +
		commit["Message"].(string)
		return s
	default: return ""
	}

}
func (i item) FilterValue() string { return "" }

func feed() {
	feed := getActivityFeed()
	items := []list.Item{}

	for _, activity := range feed {
		items = append(items, item{
			activity,
		})
	}

	p := feedviewer{}
	p.list = list.New(items, list.NewDefaultDelegate(), 0, 0)
	// Setup list
	if _, err := tea.NewProgram(p, tea.WithAltScreen()).Run(); err != nil {
		panic(err)
	}
}