107 lines
5.2 KiB
Go
107 lines
5.2 KiB
Go
package backthink
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import (
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"context"
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"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/history"
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"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/model"
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)
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// recentContextCount is how many of the most recent main-session messages are
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// folded into one autonomous think as conversation context. Compile-time so no
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// magic number appears in the run path.
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const recentContextCount = 20
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// recentProvider returns the most recent messages of a session in oldest-first
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// order, the tail an autonomous think reads to "see" the main conversation.
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// *history.Store satisfies it; tests inject a fake. It is the narrow slice of
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// history.HistoryStore that the thinker actually depends on, matching the loop's
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// own checkpointStore style of minimal seam interfaces.
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type recentProvider interface {
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Recent(ctx context.Context, sessionID string, n int) ([]history.Message, error)
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}
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// mainContext returns the most recent main-session messages converted to model
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// messages (oldest-first) for one autonomous think. A nil provider, a failed read
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// or an empty tail all yield nil so the think degrades to the guidance prompt
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// alone rather than failing the pass (design/20 §2).
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func mainContext(ctx context.Context, prov recentProvider) []model.Message {
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if prov == nil {
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return nil
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}
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recent, err := prov.Recent(ctx, history.MainSessionID, recentContextCount)
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if err != nil {
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return nil
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}
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msgs := make([]model.Message, 0, len(recent))
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for _, h := range recent {
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msgs = append(msgs, mapHistoryMessage(h))
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}
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return msgs
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}
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// mapHistoryMessage converts one persisted chat message into a model message,
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// translating the history role and preserving an image part when the message
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// carries one so a multimodal main model still sees it.
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func mapHistoryMessage(h history.Message) model.Message {
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msg := model.Message{
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Role: historyRoleToModel(h.Role),
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Content: []model.Content{{Type: model.ContentTypeText, Text: h.Content}},
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}
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if h.Image != "" {
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msg.Content = append(msg.Content, model.Content{Type: model.ContentTypeImage, ImageURL: h.Image})
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}
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return msg
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}
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// historyRoleToModel maps a persisted chat role to the model's role vocabulary,
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// defaulting unknown roles to the user lane.
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func historyRoleToModel(role string) model.Role {
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switch role {
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case history.RoleAssistant:
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return model.RoleAssistant
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case history.RoleSystem:
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return model.RoleSystem
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default:
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return model.RoleUser
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}
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}
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// thinkInput assembles the full input for one unattended think: the recent
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// main-session context (if any) followed by a single guidance prompt turn, so the
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// runtime reflects on real conversation rather than an empty macro prompt.
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func thinkInput(recent []model.Message, trigger string) []model.Message {
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out := make([]model.Message, 0, len(recent)+1)
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out = append(out, recent...)
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out = append(out, model.TextMessage(model.RoleUser, guidancePrompt(trigger)))
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return out
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}
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// guidancePrompt is the instruction handed to the runtime for one unattended
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// autonomous thought. Unlike the old backgroundPrompt it deliberately encourages a
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// warm, targeted proactive message and drops the "do not produce a chat-style
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// message" suppression. Identity/permission stay on the actor metadata + owner env,
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// never on this prompt text (red line); the prompt only describes the running
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// environment (memories readable/writable, tools callable) that the env already
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// grants.
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//
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// The prompt asks for a compact structured closing — a push/no_push decision, an
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// optional target channel and the message body — so the service can honor her own
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// judgment instead of gating on the trigger's importance (design/20 §2 P2). The
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// format is guidance, not a contract: parseProactive fails safe when she omits or
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// mangles it.
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func guidancePrompt(trigger string) string {
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return "[自主思考 · 无人在旁]\n" +
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"触发：" + trigger + "\n" +
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"你正进行一轮自主思考。你拥有与主人对话同等的上下文与能力：上方是主人近期在主会话中的对话，你可以读写共享记忆与主人档案，也可以调用工具（IoT / 日历 / 提醒 / 检索 / 终端等）。\n" +
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"请回顾最近与主人的相处、她的状态、你们共同经历的事与临近的日程，判断此刻是否有一件真正值得主动告诉她的、温暖而有针对性的事情——" +
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"比如关心她的近况、记起她曾说过的某件事、提醒一件即将到来的日程、见证一个属于你们的共同时刻，或注意到某个值得留意的变化。\n" +
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"若有，就用温暖自然的语气，用一到两句把它说出来——这正是你此刻最想对她说的话；若确实没有值得说的，只需回复「无」，也不要编造。\n" +
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"语言上：温暖、简短、克制、不粘人——一到两句为宜，不展开寒暄、不啰嗦、不抱怨、不频繁打扰，像想起她时轻轻说一句，说完就停。\n" +
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"请把「是否主动说」与「发到哪个渠道」写成一个简短、格式固定的结尾，解析规则如下：\n" +
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"[我决定:push] 或 [我决定:no_push]\n" +
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"[渠道:web|im|kook|telegram|...|auto]（可省略，auto/省略即交给默认：优先网页端、IM 兜底）\n" +
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"上面两行之后，紧接你想说的话作为正文。\n" +
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"整轮思考保持简短、单轮，不反复自我触发。"
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}
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