commit e8628e59a0b7921c4bb252d933769b3fd383afeb Author: tmk3ki Date: Wed Jul 22 01:29:15 2026 +0900 動画URL表示・動画メタ注入・チャットUI・Gemma/Gemini切替の最小プロトタイプ diff --git a/.env.example b/.env.example new file mode 100644 index 0000000..ff1a67b --- /dev/null +++ b/.env.example @@ -0,0 +1,3 @@ +GEMINI_API_KEY= +YOUTUBE_API_KEY= +UNLOCK_CODE= diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..dd25d07 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +/aibow +.env +*.mp4 +*.mov +*.wav +/testdata/ diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..0fc5688 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,12 @@ +FROM golang:1.26 AS build +WORKDIR /src +COPY go.mod go.sum ./ +RUN go mod download +COPY . . +RUN CGO_ENABLED=0 GOOS=linux go build -o /aibow . + +FROM gcr.io/distroless/static-debian12 +COPY --from=build /aibow /aibow +ENV PORT=8080 +EXPOSE 8080 +ENTRYPOINT ["/aibow"] diff --git a/env.go b/env.go new file mode 100644 index 0000000..b9bc512 --- /dev/null +++ b/env.go @@ -0,0 +1,32 @@ +package main + +import ( + "bufio" + "os" + "strings" +) + +func loadDotEnv(path string) { + f, err := os.Open(path) + if err != nil { + return + } + defer f.Close() + + scanner := bufio.NewScanner(f) + for scanner.Scan() { + line := strings.TrimSpace(scanner.Text()) + if line == "" || strings.HasPrefix(line, "#") { + continue + } + k, v, ok := strings.Cut(line, "=") + if !ok { + continue + } + k = strings.TrimSpace(k) + v = strings.TrimSpace(v) + if _, exists := os.LookupEnv(k); !exists { + os.Setenv(k, v) + } + } +} diff --git a/gemini.go b/gemini.go new file mode 100644 index 0000000..0f47057 --- /dev/null +++ b/gemini.go @@ -0,0 +1,50 @@ +package main + +import ( + "context" + "fmt" + + "google.golang.org/genai" +) + +type chatTurn struct { + Role string `json:"role"` // "user" or "model" + Text string `json:"text"` +} + +const ( + modelGemma = "gemma-4-26b-a4b-it" + modelGemini = "gemini-flash-latest" +) + +func selectModel(unlockCode, unlockSecret string) string { + if unlockSecret != "" && unlockCode == unlockSecret { + return modelGemini + } + return modelGemma +} + +func buildSystemInstruction(videoTitle, videoDescription string) *genai.Content { + prompt := fmt.Sprintf( + "あなたはユーザーと一緒に動画を見ている友達です。タメ口で短く、実況や相槌のように反応してください。\n"+ + "今見ている動画:\nタイトル: %s\n概要: %s", + videoTitle, videoDescription, + ) + return genai.NewContentFromText(prompt, genai.RoleUser) +} + +func chatReply(ctx context.Context, client *genai.Client, model, videoTitle, videoDescription string, history []chatTurn, message string) (string, error) { + contents := make([]*genai.Content, 0, len(history)+1) + for _, h := range history { + contents = append(contents, genai.NewContentFromText(h.Text, genai.Role(h.Role))) + } + contents = append(contents, genai.NewContentFromText(message, genai.RoleUser)) + + resp, err := client.Models.GenerateContent(ctx, model, contents, &genai.GenerateContentConfig{ + SystemInstruction: buildSystemInstruction(videoTitle, videoDescription), + }) + if err != nil { + return "", err + } + return resp.Text(), nil +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..86ff797 --- /dev/null +++ b/go.mod @@ -0,0 +1,23 @@ +module aibow + +go 1.26.4 + +require ( + cloud.google.com/go v0.116.0 // indirect + cloud.google.com/go/auth v0.9.3 // indirect + cloud.google.com/go/compute/metadata v0.5.0 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/google/go-cmp v0.6.0 // indirect + github.com/google/s2a-go v0.1.8 // indirect + github.com/googleapis/enterprise-certificate-proxy v0.3.4 // indirect + github.com/gorilla/websocket v1.5.3 // indirect + go.opencensus.io v0.24.0 // indirect + golang.org/x/crypto v0.36.0 // indirect + golang.org/x/net v0.38.0 // indirect + golang.org/x/sys v0.31.0 // indirect + golang.org/x/text v0.23.0 // indirect + google.golang.org/genai v1.64.0 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect + google.golang.org/grpc v1.66.2 // indirect + google.golang.org/protobuf v1.34.2 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..6f02bb4 --- /dev/null +++ b/go.sum @@ -0,0 +1,124 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.116.0 h1:B3fRrSDkLRt5qSHWe40ERJvhvnQwdZiHu0bJOpldweE= +cloud.google.com/go v0.116.0/go.mod h1:cEPSRWPzZEswwdr9BxE6ChEn01dWlTaF05LiC2Xs70U= +cloud.google.com/go/auth v0.9.3 h1:VOEUIAADkkLtyfr3BLa3R8Ed/j6w1jTBmARx+wb5w5U= +cloud.google.com/go/auth v0.9.3/go.mod h1:7z6VY+7h3KUdRov5F1i8NDP5ZzWKYmEPO842BgCsmTk= +cloud.google.com/go/compute/metadata v0.5.0 h1:Zr0eK8JbFv6+Wi4ilXAR8FJ3wyNdpxHKJNPos6LTZOY= +cloud.google.com/go/compute/metadata v0.5.0/go.mod h1:aHnloV2TPI38yx4s9+wAZhHykWvVCfu7hQbF+9CWoiY= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 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v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= +github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE= +github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= +github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= +github.com/golang/protobuf v1.4.0-rc.2/go.mod 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h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= +google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg= +google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/main.go b/main.go new file mode 100644 index 0000000..810997f --- /dev/null +++ b/main.go @@ -0,0 +1,120 @@ +package main + +import ( + "context" + "encoding/json" + "log" + "net/http" + "os" + + "google.golang.org/genai" +) + +var geminiClient *genai.Client + +func main() { + loadDotEnv(".env") + + ctx := context.Background() + client, err := genai.NewClient(ctx, &genai.ClientConfig{ + APIKey: os.Getenv("GEMINI_API_KEY"), + Backend: genai.BackendGeminiAPI, + }) + if err != nil { + log.Fatalf("failed to create genai client: %v", err) + } + geminiClient = client + + port := os.Getenv("PORT") + if port == "" { + port = "8080" + } + + http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) { + w.WriteHeader(http.StatusOK) + w.Write([]byte("ok")) + }) + http.HandleFunc("/api/video-meta", handleVideoMeta) + http.HandleFunc("/api/chat", handleChat) + http.HandleFunc("/api/unlock", handleUnlock) + http.Handle("/", http.FileServer(http.Dir("web"))) + + log.Printf("listening on :%s", port) + if err := http.ListenAndServe(":"+port, nil); err != nil { + log.Fatal(err) + } +} + +func handleVideoMeta(w http.ResponseWriter, r *http.Request) { + id := r.URL.Query().Get("id") + if id == "" { + http.Error(w, "missing id", http.StatusBadRequest) + return + } + meta, err := fetchVideoMeta(id, os.Getenv("YOUTUBE_API_KEY")) + if err != nil { + http.Error(w, err.Error(), http.StatusBadGateway) + return + } + w.Header().Set("Content-Type", "application/json") + json.NewEncoder(w).Encode(meta) +} + +type chatRequest struct { + VideoTitle string `json:"videoTitle"` + VideoDescription string `json:"videoDescription"` + History []chatTurn `json:"history"` + Message string `json:"message"` + UnlockCode string `json:"unlockCode"` +} + +type chatResponse struct { + Reply string `json:"reply"` + Model string `json:"model"` +} + +func handleChat(w http.ResponseWriter, r *http.Request) { + if r.Method != http.MethodPost { + http.Error(w, "method not allowed", http.StatusMethodNotAllowed) + return + } + var req chatRequest + if err := json.NewDecoder(r.Body).Decode(&req); err != nil { + http.Error(w, "bad request", http.StatusBadRequest) + return + } + + model := selectModel(req.UnlockCode, os.Getenv("UNLOCK_CODE")) + reply, err := chatReply(r.Context(), geminiClient, model, req.VideoTitle, req.VideoDescription, req.History, req.Message) + if err != nil { + http.Error(w, err.Error(), http.StatusBadGateway) + return + } + + w.Header().Set("Content-Type", "application/json") + json.NewEncoder(w).Encode(chatResponse{Reply: reply, Model: model}) +} + +type unlockRequest struct { + Code string `json:"code"` +} + +type unlockResponse struct { + Ok bool `json:"ok"` + Model string `json:"model"` +} + +func handleUnlock(w http.ResponseWriter, r *http.Request) { + if r.Method != http.MethodPost { + http.Error(w, "method not allowed", http.StatusMethodNotAllowed) + return + } + var req unlockRequest + if err := json.NewDecoder(r.Body).Decode(&req); err != nil { + http.Error(w, "bad request", http.StatusBadRequest) + return + } + model := selectModel(req.Code, os.Getenv("UNLOCK_CODE")) + w.Header().Set("Content-Type", "application/json") + json.NewEncoder(w).Encode(unlockResponse{Ok: model == modelGemini, Model: model}) +} diff --git a/web/index.html b/web/index.html new file mode 100644 index 0000000..94df4a7 --- /dev/null +++ b/web/index.html @@ -0,0 +1,260 @@ + + + + + +aibow + + + +
+
+
+ + +
+
+
+
+
+ +
+
+
🐾 aibow
+
🔓 Gemma
+
+ + +
+
+
+
+ + +
+
+
+ + + + + diff --git a/youtube.go b/youtube.go new file mode 100644 index 0000000..fb2f4bf --- /dev/null +++ b/youtube.go @@ -0,0 +1,52 @@ +package main + +import ( + "encoding/json" + "fmt" + "net/http" + "net/url" +) + +type videoMeta struct { + Title string `json:"title"` + Description string `json:"description"` +} + +type ytVideosResponse struct { + Items []struct { + Snippet struct { + Title string `json:"title"` + Description string `json:"description"` + } `json:"snippet"` + } `json:"items"` +} + +func fetchVideoMeta(videoID, apiKey string) (*videoMeta, error) { + q := url.Values{} + q.Set("part", "snippet") + q.Set("id", videoID) + q.Set("key", apiKey) + + resp, err := http.Get("https://www.googleapis.com/youtube/v3/videos?" + q.Encode()) + if err != nil { + return nil, err + } + defer resp.Body.Close() + + if resp.StatusCode != http.StatusOK { + return nil, fmt.Errorf("youtube api status %d", resp.StatusCode) + } + + var parsed ytVideosResponse + if err := json.NewDecoder(resp.Body).Decode(&parsed); err != nil { + return nil, err + } + if len(parsed.Items) == 0 { + return nil, fmt.Errorf("video not found: %s", videoID) + } + + return &videoMeta{ + Title: parsed.Items[0].Snippet.Title, + Description: parsed.Items[0].Snippet.Description, + }, nil +}