package main

import (
	"fmt"
	"os"
	"path"
	"strings"
	"time"

	"elefant/models"
	"elefant/pngmeta"
	"elefant/rag"

	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"
)

func makeChatTable(chatMap map[string]models.Chat) *tview.Table {
	actions := []string{"load", "rename", "delete", "update card"}
	chatList := make([]string, len(chatMap))
	i := 0
	for name := range chatMap {
		chatList[i] = name
		i++
	}
	rows, cols := len(chatMap), len(actions)+2
	chatActTable := tview.NewTable().
		SetBorders(true)
		// for chatName, chat := range chatMap {
	for r := 0; r < rows; r++ {
		// r := 0
		for c := 0; c < cols; c++ {
			color := tcell.ColorWhite
			switch c {
			case 0:
				chatActTable.SetCell(r, c,
					tview.NewTableCell(chatList[r]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			case 1:
				chatActTable.SetCell(r, c,
					tview.NewTableCell(chatMap[chatList[r]].Msgs[len(chatMap[chatList[r]].Msgs)-30:]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			default:
				chatActTable.SetCell(r, c,
					tview.NewTableCell(actions[c-2]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			}
		}
		// r++
	}
	chatActTable.Select(0, 0).SetFixed(1, 1).SetDoneFunc(func(key tcell.Key) {
		if key == tcell.KeyEsc || key == tcell.KeyF1 {
			pages.RemovePage(historyPage)
			return
		}
		if key == tcell.KeyEnter {
			chatActTable.SetSelectable(true, true)
		}
	}).SetSelectedFunc(func(row int, column int) {
		tc := chatActTable.GetCell(row, column)
		tc.SetTextColor(tcell.ColorRed)
		chatActTable.SetSelectable(false, false)
		selectedChat := chatList[row]
		defer pages.RemovePage(historyPage)
		// notification := fmt.Sprintf("chat: %s; action: %s", selectedChat, tc.Text)
		switch tc.Text {
		case "load":
			history, err := loadHistoryChat(selectedChat)
			if err != nil {
				logger.Error("failed to read history file", "chat", selectedChat)
				pages.RemovePage(historyPage)
				return
			}
			chatBody.Messages = history
			textView.SetText(chatToText(cfg.ShowSys))
			activeChatName = selectedChat
			pages.RemovePage(historyPage)
			return
		case "rename":
			pages.RemovePage(historyPage)
			pages.AddPage(renamePage, renameWindow, true, true)
			return
		case "delete":
			sc, ok := chatMap[selectedChat]
			if !ok {
				// no chat found
				pages.RemovePage(historyPage)
				return
			}
			if err := store.RemoveChat(sc.ID); err != nil {
				logger.Error("failed to remove chat from db", "chat_id", sc.ID, "chat_name", sc.Name)
			}
			if err := notifyUser("chat deleted", selectedChat+" was deleted"); err != nil {
				logger.Error("failed to send notification", "error", err)
			}
			// load last chat
			chatBody.Messages = loadOldChatOrGetNew()
			textView.SetText(chatToText(cfg.ShowSys))
			pages.RemovePage(historyPage)
			return
		case "update card":
			// save updated card
			fi := strings.Index(selectedChat, "_")
			agentName := selectedChat[fi+1:]
			cc, ok := sysMap[agentName]
			if !ok {
				logger.Warn("no such card", "agent", agentName)
				//no:lint
				notifyUser("error", "no such card: "+agentName)
			}
			if err := pngmeta.WriteToPng(cc.ToSpec(cfg.UserRole), cc.FilePath, cc.FilePath); err != nil {
				logger.Error("failed to write charcard",
					"error", err)
			}
			// pages.RemovePage(historyPage)
			return
		default:
			// pages.RemovePage(historyPage)
			return
		}
	})
	return chatActTable
}

// func makeRAGTable(fileList []string) *tview.Table {
func makeRAGTable(fileList []string) *tview.Flex {
	actions := []string{"load", "delete"}
	rows, cols := len(fileList), len(actions)+1
	fileTable := tview.NewTable().
		SetBorders(true)
	longStatusView := tview.NewTextView()
	longStatusView.SetText("status text")
	longStatusView.SetBorder(true).SetTitle("status")
	longStatusView.SetChangedFunc(func() {
		app.Draw()
	})
	ragflex := tview.NewFlex().SetDirection(tview.FlexRow).
		AddItem(longStatusView, 0, 10, false).
		AddItem(fileTable, 0, 60, true)
	for r := 0; r < rows; r++ {
		for c := 0; c < cols; c++ {
			color := tcell.ColorWhite
			if c < 1 {
				fileTable.SetCell(r, c,
					tview.NewTableCell(fileList[r]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			} else {
				fileTable.SetCell(r, c,
					tview.NewTableCell(actions[c-1]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			}
		}
	}
	errCh := make(chan error, 1)
	go func() {
		defer pages.RemovePage(RAGPage)
		for {
			select {
			case err := <-errCh:
				if err == nil {
					logger.Error("somehow got a nil err", "error", err)
					continue
				}
				logger.Error("got an err in rag status", "error", err, "textview", longStatusView)
				longStatusView.SetText(fmt.Sprintf("%v", err))
				close(errCh)
				return
			case status := <-rag.LongJobStatusCh:
				logger.Info("reading status channel", "status", status)
				longStatusView.SetText(status)
				// fmt.Fprintln(longStatusView, status)
				// app.Sync()
				if status == rag.FinishedRAGStatus {
					close(errCh)
					time.Sleep(2 * time.Second)
					return
				}
			}
		}
	}()
	fileTable.Select(0, 0).SetFixed(1, 1).SetDoneFunc(func(key tcell.Key) {
		if key == tcell.KeyEsc || key == tcell.KeyF1 {
			pages.RemovePage(RAGPage)
			return
		}
		if key == tcell.KeyEnter {
			fileTable.SetSelectable(true, true)
		}
	}).SetSelectedFunc(func(row int, column int) {
		// defer pages.RemovePage(RAGPage)
		tc := fileTable.GetCell(row, column)
		tc.SetTextColor(tcell.ColorRed)
		fileTable.SetSelectable(false, false)
		fpath := fileList[row]
		// notification := fmt.Sprintf("chat: %s; action: %s", fpath, tc.Text)
		switch tc.Text {
		case "load":
			fpath = path.Join(cfg.RAGDir, fpath)
			longStatusView.SetText("clicked load")
			go func() {
				if err := ragger.LoadRAG(fpath); err != nil {
					logger.Error("failed to embed file", "chat", fpath, "error", err)
					errCh <- err
					// pages.RemovePage(RAGPage)
					return
				}
			}()
			return
		case "delete":
			fpath = path.Join(cfg.RAGDir, fpath)
			if err := os.Remove(fpath); err != nil {
				logger.Error("failed to delete file", "filename", fpath, "error", err)
				return
			}
			if err := notifyUser("chat deleted", fpath+" was deleted"); err != nil {
				logger.Error("failed to send notification", "error", err)
			}
			return
		default:
			return
		}
	})
	return ragflex
}

func makeLoadedRAGTable(fileList []string) *tview.Table {
	actions := []string{"delete"}
	rows, cols := len(fileList), len(actions)+1
	fileTable := tview.NewTable().
		SetBorders(true)
	for r := 0; r < rows; r++ {
		for c := 0; c < cols; c++ {
			color := tcell.ColorWhite
			if c < 1 {
				fileTable.SetCell(r, c,
					tview.NewTableCell(fileList[r]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			} else {
				fileTable.SetCell(r, c,
					tview.NewTableCell(actions[c-1]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			}
		}
	}
	fileTable.Select(0, 0).SetFixed(1, 1).SetDoneFunc(func(key tcell.Key) {
		if key == tcell.KeyEsc || key == tcell.KeyF1 {
			pages.RemovePage(RAGPage)
			return
		}
		if key == tcell.KeyEnter {
			fileTable.SetSelectable(true, true)
		}
	}).SetSelectedFunc(func(row int, column int) {
		defer pages.RemovePage(RAGPage)
		tc := fileTable.GetCell(row, column)
		tc.SetTextColor(tcell.ColorRed)
		fileTable.SetSelectable(false, false)
		fpath := fileList[row]
		// notification := fmt.Sprintf("chat: %s; action: %s", fpath, tc.Text)
		switch tc.Text {
		case "delete":
			if err := ragger.RemoveFile(fpath); err != nil {
				logger.Error("failed to delete file", "filename", fpath, "error", err)
				return
			}
			if err := notifyUser("chat deleted", fpath+" was deleted"); err != nil {
				logger.Error("failed to send notification", "error", err)
			}
			return
		default:
			// pages.RemovePage(RAGPage)
			return
		}
	})
	return fileTable
}

func makeAgentTable(agentList []string) *tview.Table {
	actions := []string{"load"}
	rows, cols := len(agentList), len(actions)+1
	chatActTable := tview.NewTable().
		SetBorders(true)
	for r := 0; r < rows; r++ {
		for c := 0; c < cols; c++ {
			color := tcell.ColorWhite
			if c < 1 {
				chatActTable.SetCell(r, c,
					tview.NewTableCell(agentList[r]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			} else {
				chatActTable.SetCell(r, c,
					tview.NewTableCell(actions[c-1]).
						SetTextColor(color).
						SetAlign(tview.AlignCenter))
			}
		}
	}
	chatActTable.Select(0, 0).SetFixed(1, 1).SetDoneFunc(func(key tcell.Key) {
		if key == tcell.KeyEsc || key == tcell.KeyF1 {
			pages.RemovePage(agentPage)
			return
		}
		if key == tcell.KeyEnter {
			chatActTable.SetSelectable(true, true)
		}
	}).SetSelectedFunc(func(row int, column int) {
		tc := chatActTable.GetCell(row, column)
		tc.SetTextColor(tcell.ColorRed)
		chatActTable.SetSelectable(false, false)
		selected := agentList[row]
		// notification := fmt.Sprintf("chat: %s; action: %s", selectedChat, tc.Text)
		switch tc.Text {
		case "load":
			if ok := charToStart(selected); !ok {
				logger.Warn("no such sys msg", "name", selected)
				pages.RemovePage(agentPage)
				return
			}
			// replace textview
			textView.SetText(chatToText(cfg.ShowSys))
			colorText()
			updateStatusLine()
			// sysModal.ClearButtons()
			pages.RemovePage(agentPage)
			app.SetFocus(textArea)
			return
		case "rename":
			pages.RemovePage(agentPage)
			pages.AddPage(renamePage, renameWindow, true, true)
			return
		case "delete":
			sc, ok := chatMap[selected]
			if !ok {
				// no chat found
				pages.RemovePage(agentPage)
				return
			}
			if err := store.RemoveChat(sc.ID); err != nil {
				logger.Error("failed to remove chat from db", "chat_id", sc.ID, "chat_name", sc.Name)
			}
			if err := notifyUser("chat deleted", selected+" was deleted"); err != nil {
				logger.Error("failed to send notification", "error", err)
			}
			pages.RemovePage(agentPage)
			return
		default:
			pages.RemovePage(agentPage)
			return
		}
	})
	return chatActTable
}