205 lines
6.2 KiB
Go
205 lines
6.2 KiB
Go
package discord
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import (
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"context"
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"encoding/json"
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"fmt"
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"strings"
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"time"
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"git.handmade.network/hmn/hmn/src/config"
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"git.handmade.network/hmn/hmn/src/db"
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"git.handmade.network/hmn/hmn/src/hmndata"
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"git.handmade.network/hmn/hmn/src/logging"
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"git.handmade.network/hmn/hmn/src/models"
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"git.handmade.network/hmn/hmn/src/oops"
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)
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// NOTE(asaf): Updates or creates a discord message according to the following rules:
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//
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// Create when:
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// * No previous message exists
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// * We have non-zero live streamers
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// * Message exists, but we're adding a new streamer that wasn't in the existing message
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// * Message exists, but is not the most recent message in the channel
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// Update otherwise
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// That way we ensure that the message doesn't get scrolled offscreen, and the
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// new message indicator for the channel doesn't trigger when a streamer goes offline or
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// updates the stream title.
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//
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// NOTE(asaf): No-op if StreamsChannelID is not specified in the config
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func UpdateStreamers(ctx context.Context, dbConn db.ConnOrTx, streamers []hmndata.StreamDetails) error {
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if len(config.Config.Discord.StreamsChannelID) == 0 {
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return nil
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}
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livestreamMessage, err := hmndata.FetchPersistentVar[hmndata.DiscordLivestreamMessage](
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ctx,
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dbConn,
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hmndata.VarNameDiscordLivestreamMessage,
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)
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editExisting := true
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if err != nil {
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if err == db.NotFound {
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editExisting = false
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} else {
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return oops.New(err, "failed to fetch last message persistent var from db")
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}
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}
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if editExisting {
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// Make sure we have a message to edit
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_, err := GetChannelMessage(ctx, config.Config.Discord.StreamsChannelID, livestreamMessage.MessageID)
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if err != nil {
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if err == NotFound {
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editExisting = false
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} else {
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oops.New(err, "failed to fetch existing message from discord")
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}
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}
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}
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if len(streamers) == 0 {
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if livestreamMessage != nil {
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err = DeleteMessage(ctx, config.Config.Discord.StreamsChannelID, livestreamMessage.MessageID)
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if err != nil {
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return oops.New(err, "failed to delete livestream message from discord")
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}
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err = hmndata.RemovePersistentVar(ctx, dbConn, hmndata.VarNameDiscordLivestreamMessage)
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if err != nil {
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return oops.New(err, "failed to clear discord persistent var")
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}
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}
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} else {
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if editExisting {
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// Check if we have new streamers to add
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existingStreamers := livestreamMessage.Streamers
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for _, s := range streamers {
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found := false
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for _, es := range existingStreamers {
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if es.Username == s.Username {
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found = true
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break
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}
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}
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if !found {
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editExisting = false
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break
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}
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}
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}
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if editExisting {
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// Check that our editable message is the latest in the channel
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messages, err := GetChannelMessages(ctx, config.Config.Discord.StreamsChannelID, GetChannelMessagesInput{
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Limit: 1,
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})
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if err != nil {
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return oops.New(err, "failed to fetch messages from discord")
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}
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if len(messages) == 0 || messages[0].ID != livestreamMessage.MessageID {
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editExisting = false
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}
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}
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messageContent := ""
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var builder strings.Builder
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for _, s := range streamers {
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builder.WriteString(fmt.Sprintf(":red_circle: **%s** is live: <https://twitch.tv/%s>\n> _%s_\nStarted <t:%d:R>\n\n", s.Username, s.Username, s.Title, s.StartTime.Unix()))
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}
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messageContent = builder.String()
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msgJson, err := json.Marshal(CreateMessageRequest{
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Content: messageContent,
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Flags: FlagSuppressEmbeds,
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AllowedMentions: &MessageAllowedMentions{},
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})
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if err != nil {
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return oops.New(err, "failed to marshal discord message")
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}
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newMessageID := ""
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if editExisting {
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updatedMessage, err := EditMessage(ctx, config.Config.Discord.StreamsChannelID, livestreamMessage.MessageID, string(msgJson))
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if err != nil {
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return oops.New(err, "failed to update discord message for streams channel")
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}
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newMessageID = updatedMessage.ID
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} else {
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if livestreamMessage != nil {
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err = DeleteMessage(ctx, config.Config.Discord.StreamsChannelID, livestreamMessage.MessageID)
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if err != nil {
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log := logging.ExtractLogger(ctx)
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log.Error().Err(err).Msg("failed to delete existing discord message from streams channel")
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}
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}
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sentMessage, err := CreateMessage(ctx, config.Config.Discord.StreamsChannelID, string(msgJson))
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if err != nil {
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return oops.New(err, "failed to create discord message for streams channel")
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}
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newMessageID = sentMessage.ID
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}
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data := hmndata.DiscordLivestreamMessage{
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MessageID: newMessageID,
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Streamers: streamers,
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}
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err = hmndata.StorePersistentVar(ctx, dbConn, hmndata.VarNameDiscordLivestreamMessage, &data)
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if err != nil {
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return oops.New(err, "failed to store persistent var for discord streams")
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}
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}
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return nil
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}
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func PostStreamHistory(ctx context.Context, history *models.TwitchStreamHistory) (string, error) {
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if len(config.Config.Discord.StreamsChannelID) == 0 {
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return "", nil
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}
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approximated := ""
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if history.EndApproximated {
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approximated = "about "
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}
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duration := history.EndedAt.Sub(history.StartedAt).Truncate(time.Second).String()
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messageContent := fmt.Sprintf(
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":o: **%s** was live: https://twitch.tv/%s\n> _%s_\nOn <t:%d:F> for %s%s",
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history.TwitchLogin,
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history.TwitchLogin,
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history.Title,
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history.StartedAt.Unix(),
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approximated,
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duration,
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)
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if history.VODUrl != "" {
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messageContent += fmt.Sprintf("\nVOD: %s", history.VODUrl)
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}
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msgJson, err := json.Marshal(CreateMessageRequest{
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Content: messageContent,
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Flags: FlagSuppressEmbeds,
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AllowedMentions: &MessageAllowedMentions{},
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})
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if err != nil {
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return "", oops.New(err, "failed to marshal discord message")
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}
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messageID := ""
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if history.DiscordMessageID != "" {
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updatedMessage, err := EditMessage(ctx, config.Config.Discord.StreamsChannelID, history.DiscordMessageID, string(msgJson))
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if err != nil {
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return "", oops.New(err, "failed to update discord message for stream history")
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}
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messageID = updatedMessage.ID
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} else {
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msg, err := CreateMessage(ctx, config.Config.Discord.StreamsChannelID, string(msgJson))
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if err != nil {
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return "", oops.New(err, "failed to create discord message for stream history")
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}
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messageID = msg.ID
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}
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return messageID, nil
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}
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