// Copyright 2025 eat-pray-ai & OpenWaygate
// SPDX-License-Identifier: Apache-2.0
package watermark
import (
"bytes"
"context"
"encoding/json"
"io"
"log/slog"
"time"
"github.com/eat-pray-ai/yutu/cmd"
"github.com/eat-pray-ai/yutu/pkg/watermark"
"github.com/google/jsonschema-go/jsonschema"
"github.com/modelcontextprotocol/go-sdk/mcp"
"github.com/spf13/cobra"
)
const (
setTool = "watermark-set"
setShort = "Set watermark for channel's video"
setLong = "Set watermark for channel's video by channel id"
)
type setIn struct {
ChannelId string `json:"channelId"`
File string `json:"file"`
InVideoPosition string `json:"inVideoPosition"`
DurationMs int64 `json:"durationMs"`
OffsetMs int64 `json:"offsetMs"`
OffsetType string `json:"offsetType"`
OnBehalfOfContentOwner string `json:"onBehalfOfContentOwner"`
}
var setInSchema = &jsonschema.Schema{
Type: "object",
Required: []string{"channelId", "file"},
Properties: map[string]*jsonschema.Schema{
"channelId": {
Type: "string",
Description: cidUsage,
Default: json.RawMessage(`""`),
},
"file": {
Type: "string",
Description: fileUsage,
Default: json.RawMessage(`""`),
},
"inVideoPosition": {
Type: "string",
Enum: []any{"topLeft", "topRight", "bottomLeft", "bottomRight", ""},
Description: ivpUsage,
Default: json.RawMessage(`""`),
},
"durationMs": {
Type: "number",
Description: dmUsage,
Default: json.RawMessage("0"),
},
"offsetMs": {
Type: "number",
Description: omUsage,
Default: json.RawMessage("0"),
},
"offsetType": {
Type: "string",
Enum: []any{"offsetFromStart", "offsetFromEnd", ""},
Description: otUsage,
Default: json.RawMessage(`""`),
},
"onBehalfOfContentOwner": {
Type: "string",
Description: "",
Default: json.RawMessage(`""`),
},
},
}
func init() {
mcp.AddTool(
cmd.Server, &mcp.Tool{
Name: setTool,
Title: setShort,
Description: setLong,
InputSchema: setInSchema,
Annotations: &mcp.ToolAnnotations{
DestructiveHint: jsonschema.Ptr(false),
IdempotentHint: true,
OpenWorldHint: jsonschema.Ptr(true),
ReadOnlyHint: false,
},
}, setHandler,
)
watermarkCmd.AddCommand(setCmd)
setCmd.Flags().StringVarP(&channelId, "channelId", "c", "", cidUsage)
setCmd.Flags().StringVarP(&file, "file", "f", "", fileUsage)
setCmd.Flags().StringVarP(
&inVideoPosition, "inVideoPosition", "p", "", ivpUsage,
)
setCmd.Flags().Uint64VarP(&durationMs, "durationMs", "d", 0, dmUsage)
setCmd.Flags().Uint64VarP(&offsetMs, "offsetMs", "m", 0, omUsage)
setCmd.Flags().StringVarP(&offsetType, "offsetType", "t", "", otUsage)
setCmd.Flags().StringVarP(
&onBehalfOfContentOwner, "onBehalfOfContentOwner", "b", "", "",
)
_ = setCmd.MarkFlagRequired("channelId")
_ = setCmd.MarkFlagRequired("file")
}
var setCmd = &cobra.Command{
Use: "set",
Short: setShort,
Long: setLong,
Run: func(cmd *cobra.Command, args []string) {
err := set(cmd.OutOrStdout())
if err != nil {
_ = cmd.Help()
cmd.PrintErrf("Error: %v\n", err)
}
},
}
func setHandler(
ctx context.Context, req *mcp.CallToolRequest, input setIn,
) (*mcp.CallToolResult, any, error) {
logger := slog.New(
mcp.NewLoggingHandler(
req.Session,
&mcp.LoggingHandlerOptions{LoggerName: setTool, MinInterval: time.Second},
),
)
channelId = input.ChannelId
file = input.File
inVideoPosition = input.InVideoPosition
durationMs = uint64(input.DurationMs)
offsetMs = uint64(input.OffsetMs)
offsetType = input.OffsetType
onBehalfOfContentOwner = input.OnBehalfOfContentOwner
var writer bytes.Buffer
err := set(&writer)
if err != nil {
logger.ErrorContext(ctx, err.Error(), "input", input)
return nil, nil, err
}
return &mcp.CallToolResult{Content: []mcp.Content{&mcp.TextContent{Text: writer.String()}}}, nil, nil
}
func set(writer io.Writer) error {
w := watermark.NewWatermark(
watermark.WithChannelId(channelId),
watermark.WithFile(file),
watermark.WithInVideoPosition(inVideoPosition),
watermark.WithDurationMs(durationMs),
watermark.WithOffsetMs(offsetMs),
watermark.WithOffsetType(offsetType),
watermark.WithOnBehalfOfContentOwner(onBehalfOfContentOwner),
watermark.WithService(nil),
)
return w.Set(writer)
}
