package server

import (
	"bytes"
	"fmt"
	"log/slog"
	"net/http"
	"strconv"

	"git.lastassault.de/speatzle/morffix/constants"
	"github.com/jackc/pgx/v5"
)

type LibrariesData struct {
	Libraries      []Library
	FfmpegCommands []FfmpegCommand
}

type Library struct {
	ID                        string `db:"id"`
	HealthCommandID           *int   `db:"health_command_id"`
	TranscodeCommandID        *int   `db:"transcode_command_id"`
	Name                      string `db:"name"`
	Path                      string `db:"path"`
	Enable                    bool   `db:"enable"`
	TranscodeReplace          bool   `db:"transcode_replace"`
	TranscodePath             string `db:"transcode_path"`
	ScanNewQueueHealth        bool   `db:"scan_new_queue_health"`
	ScanChangedQueueHealth    bool   `db:"scan_changed_queue_health"`
	ScanNewQueueTranscode     bool   `db:"scan_new_queue_transcode"`
	ScanChangedQueueTranscode bool   `db:"scan_changed_queue_transcode"`
	HealthOkQueueTranscode    bool   `db:"health_ok_queue_transcode"`
}

func handleLibraries(w http.ResponseWriter, r *http.Request) {
	data := LibrariesData{}

	if r.Method == "POST" {
		err := createLibrary(r)
		if err != nil {
			slog.ErrorContext(r.Context(), "Create Library", "err", err)
			http.Error(w, "Error Create Library: "+err.Error(), http.StatusInternalServerError)
			return
		}
	}

	rows, err := db.Query(r.Context(), "SELECT * FROM libraries")
	if err != nil {
		slog.ErrorContext(r.Context(), "Query Libraries", "err", err)
		http.Error(w, "Error Query Libraries: "+err.Error(), http.StatusInternalServerError)
		return
	}
	libraries, err := pgx.CollectRows[Library](rows, pgx.RowToStructByName[Library])
	if err != nil {
		slog.ErrorContext(r.Context(), "Collect Rows", "err", err)
		http.Error(w, "Error Query Libraries: "+err.Error(), http.StatusInternalServerError)
		return
	}
	data.Libraries = libraries

	rows, err = db.Query(r.Context(), "SELECT id, name, data FROM ffmpeg_commands")
	if err != nil {
		slog.ErrorContext(r.Context(), "Query Ffmpeg Commands", "err", err)
		http.Error(w, "Error Ffmpeg Commands: "+err.Error(), http.StatusInternalServerError)
		return
	}
	ffmpegCommands, err := pgx.CollectRows[FfmpegCommand](rows, pgx.RowToStructByName[FfmpegCommand])
	if err != nil {
		slog.ErrorContext(r.Context(), "Collect Ffmpeg Commands", "err", err)
		http.Error(w, "Error Collect Ffmpeg Commands: "+err.Error(), http.StatusInternalServerError)
		return
	}
	data.FfmpegCommands = ffmpegCommands

	buf := bytes.Buffer{}
	err = templates.ExecuteTemplate(&buf, constants.LIBRARIES_TEMPLATE_NAME, data)
	if err != nil {
		slog.ErrorContext(r.Context(), "Executing Libraries Template", "err", err)
		http.Error(w, "Error Executing Template: "+err.Error(), http.StatusInternalServerError)
		return
	}

	_, err = w.Write(buf.Bytes())
	if err != nil {
		slog.ErrorContext(r.Context(), "Writing http Response", "err", err)
	}
}

func createLibrary(r *http.Request) error {
	err := r.ParseForm()
	if err != nil {
		return fmt.Errorf("Parseing Form: %w", err)
	}
	name := r.FormValue("name")
	path := r.FormValue("path")
	enable := r.FormValue("enable") == "on"
	transcode_replace := r.FormValue("transcode_replace") == "on"
	transcode_path := r.FormValue("transcode_path")
	scan_new_queue_health := r.FormValue("scan_new_queue_health") == "on"
	scan_changed_queue_health := r.FormValue("scan_changed_queue_health") == "on"
	scan_new_queue_transcode := r.FormValue("scan_new_queue_transcode") == "on"
	scan_changed_queue_transcode := r.FormValue("scan_changed_queue_transcode") == "on"
	health_ok_queue_transcode := r.FormValue("health_ok_queue_transcode") == "on"

	var health_command_id *int = nil
	var transcode_command_id *int = nil

	h, err := strconv.Atoi(r.FormValue("health_command_id"))
	if err == nil {
		health_command_id = &h
	}
	t, err := strconv.Atoi(r.FormValue("transcode_command_id"))
	if err == nil {
		transcode_command_id = &t
	}

	slog.Info("Got Library Create", "name", name, "path", path, "enable", enable)

	_, err = db.Exec(r.Context(), "INSERT INTO Libraries (name, path, enable, scan_new_queue_health, scan_changed_queue_health, scan_new_queue_transcode, scan_changed_queue_transcode, health_ok_queue_transcode, transcode_replace, transcode_path, health_command_id, transcode_command_id) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12)", name, path, enable, scan_new_queue_health, scan_changed_queue_health, scan_new_queue_transcode, scan_changed_queue_transcode, health_ok_queue_transcode, transcode_replace, transcode_path, health_command_id, transcode_command_id)
	if err != nil {
		return fmt.Errorf("Inserting Library: %w", err)
	}

	return nil
}