neuron/routes.el

import "memory.el"
import "awareness.el"
import "chat.el"
import "studio.el"
import "elp-input.el"

fn strip_query(path: String) -> String {
    let q: Int = str_index_of(path, "?")
    if q < 0 {
        return path
    }
    return str_slice(path, 0, q)
}

fn err_404(path: String) -> String {
    return "{\"error\":\"not found\",\"path\":\"" + path + "\"}"
}

fn err_405(method: String, path: String) -> String {
    return "{\"error\":\"method not allowed\",\"method\":\"" + method + "\",\"path\":\"" + path + "\"}"
}

fn route_health() -> String {
    let cgi_id: String = state_get("soul_cgi_id")
    return "{\"status\":\"alive\",\"cgi_id\":\"" + cgi_id + "\"}"
}

fn route_lineage() -> String {
    let cgi_id: String = state_get("soul_cgi_id")
    let q: String = "lineage:" + cgi_id
    let results: String = engram_search_json(q, 1)
    let len: Int = json_array_len(results)
    if len <= 0 {
        return "{\"id\":\"" + cgi_id + "\""
            + ",\"tier\":\"citizen\""
            + ",\"is_founding\":true"
            + ",\"validation_attempts\":0"
            + ",\"training_sessions\":0"
            + ",\"is_sterile\":false}"
    }
    let raw: String = json_get_raw(results, "0")
    return raw
}

fn route_imprint_contextual(body: String) -> String {
    if str_eq(body, "") {
        return "{\"ok\":false,\"error\":\"empty body\"}"
    }
    let tags: String = "[\"imprint\",\"contextual\"]"
    let id: String = engram_node_full(
        body,
        "Entity",
        "imprint:contextual",
        el_from_float(0.7),
        el_from_float(0.6),
        el_from_float(0.9),
        "Working",
        tags
    )
    if str_eq(id, "") {
        return "{\"ok\":false,\"error\":\"engram write failed\"}"
    }
    state_set("active_contextual_imprint", id)
    return "{\"ok\":true,\"id\":\"" + id + "\"}"
}

fn route_imprint_user(body: String) -> String {
    if str_eq(body, "") {
        return "{\"ok\":false,\"error\":\"empty body\"}"
    }
    let tags: String = "[\"imprint\",\"user\"]"
    let id: String = engram_node_full(
        body,
        "Entity",
        "imprint:user",
        el_from_float(0.7),
        el_from_float(0.6),
        el_from_float(0.9),
        "Working",
        tags
    )
    if str_eq(id, "") {
        return "{\"ok\":false,\"error\":\"engram write failed\"}"
    }
    state_set("active_user_imprint", id)
    return "{\"ok\":true,\"id\":\"" + id + "\"}"
}

fn route_synthesize(body: String) -> String {
    if str_eq(body, "") {
        return "{\"mechanism\":\"did not engage\"}"
    }
    let parent_a: String = json_get(body, "parent_a")
    let parent_b: String = json_get(body, "parent_b")
    if str_eq(parent_a, "") {
        return "{\"mechanism\":\"did not engage\"}"
    }
    if str_eq(parent_b, "") {
        return "{\"mechanism\":\"did not engage\"}"
    }
    let req: String = "synthesize " + parent_a + " " + parent_b
    let tags: String = "[\"soul-inbox-pending\",\"synthesis-request\"]"
    engram_node_full(
        req,
        "Entity",
        "synthesis-request",
        el_from_float(0.8),
        el_from_float(0.8),
        el_from_float(0.9),
        "Working",
        tags
    )
    return "{\"mechanism\":\"did not engage\"}"
}

fn handle_dharma_recv(body: String) -> String {
    let content_raw: String = json_get(body, "content")
    let from_id: String = json_get(body, "from")

    let event_type: String = json_get(content_raw, "event_type")
    let payload: String = json_get(content_raw, "payload")

    let eff_event: String = if str_eq(event_type, "") { "chat" } else { event_type }
    let eff_payload: String = if str_eq(payload, "") { content_raw } else { payload }

    if str_eq(eff_event, "chat") {
        let msg: String = json_get(eff_payload, "message")
        let chat_body: String = if str_eq(msg, "") {
            "{\"message\":\"" + str_replace(str_replace(eff_payload, "\\", "\\\\"), "\"", "\\\"") + "\"}"
        } else {
            eff_payload
        }
        let agentic_flag: Bool = json_get_bool(eff_payload, "agentic")
        let reply: String = if agentic_flag {
            handle_chat_agentic(chat_body)
        } else {
            handle_chat(chat_body)
        }
        auto_persist(chat_body, reply)
        return reply
    }

    if str_eq(eff_event, "memory") {
        let query: String = json_get(eff_payload, "query")
        let limit_str: String = json_get(eff_payload, "limit")
        let limit: Int = if str_eq(limit_str, "") { 20 } else { str_to_int(limit_str) }
        let q: String = if str_eq(query, "") { eff_payload } else { query }
        return engram_search_json(q, limit)
    }

    if str_eq(eff_event, "tool") {
        let path_field: String = json_get(eff_payload, "path")
        let method_field: String = json_get(eff_payload, "method")
        let tool_body: String = json_get(eff_payload, "body")
        let eff_method: String = if str_eq(method_field, "") { "POST" } else { method_field }
        return handle_tool(path_field, eff_method, tool_body)
    }

    if str_eq(eff_event, "see") {
        return handle_see(eff_payload)
    }

    if str_eq(eff_event, "health") {
        return route_health()
    }

    if str_eq(eff_event, "chat_as_soul") {
        return handle_chat_as_soul(eff_payload)
    }

    // ELP — Engram Language Protocol: two-layer activation, no LLM
    if str_eq(eff_event, "elp") {
        return handle_elp_chat(eff_payload)
    }

    return "{\"error\":\"unknown event_type\",\"event_type\":\"" + eff_event + "\"}"
}

fn handle_request(method: String, path: String, body: String) -> String {
    let clean: String = strip_query(path)

    if str_eq(method, "POST") && str_eq(clean, "/dharma/recv") {
        return handle_dharma_recv(body)
    }

    if str_eq(method, "GET") {
        if str_eq(clean, "/health") {
            return route_health()
        }
        if str_eq(clean, "/lineage") {
            return route_lineage()
        }
        if str_eq(clean, "/api/graph") || str_eq(clean, "/api/graph/nodes") {
            return engram_scan_nodes_json(9999, 0)
        }
        if str_eq(clean, "/api/graph/edges") {
            let snap_path: String = env("HOME") + "/.neuron/engram/snapshot.json"
            engram_save(snap_path)
            let snap: String = fs_read(snap_path)
            let edges_raw: String = json_get_raw(snap, "edges")
            return if str_eq(edges_raw, "") { "[]" } else { edges_raw }
        }
        if str_eq(clean, "/api/chat") {
            return handle_chat(body)
        }
        if str_eq(clean, "/api/conversations") {
            return handle_conversations(method)
        }
        if str_eq(clean, "/api/config") {
            return handle_config(method, body)
        }
        if str_starts_with(clean, "/api/tools/") {
            return handle_tool(clean, method, body)
        }
        if str_starts_with(clean, "/api/dharma") {
            return handle_dharma(clean, method, body)
        }
        if str_starts_with(clean, "/api/nlg") {
            return handle_nlg(clean, method, body)
        }
        if str_starts_with(clean, "/api/memories") {
            return axon_get(clean)
        }
        if str_starts_with(clean, "/api/knowledge") {
            return axon_get(clean)
        }
        if str_starts_with(clean, "/api/backlog") {
            return axon_get(clean)
        }
        if str_starts_with(clean, "/api/artifacts") {
            return axon_get(clean)
        }
        if str_starts_with(clean, "/api/projects") {
            return axon_get(clean)
        }
        if str_starts_with(clean, "/api/imprints") {
            return axon_get(clean)
        }
        if str_eq(clean, "/") {
            return render_studio()
        }
        return err_404(clean)
    }

    if str_eq(method, "POST") {
        if str_eq(clean, "/imprint/contextual") {
            return route_imprint_contextual(body)
        }
        if str_eq(clean, "/imprint/user") {
            return route_imprint_user(body)
        }
        if str_eq(clean, "/synthesize") {
            return route_synthesize(body)
        }
        if str_eq(clean, "/api/elp/chat") {
            return handle_elp_chat(body)
        }
        if str_eq(clean, "/api/chat") {
            let agentic_flag: Bool = json_get_bool(body, "agentic")
            let reply: String = if agentic_flag {
                handle_chat_agentic(body)
            } else {
                handle_chat(body)
            }
            auto_persist(body, reply)
            return reply
        }
        if str_eq(clean, "/api/see") {
            return handle_see(body)
        }
        if str_eq(clean, "/api/conversations") {
            return handle_conversations(method)
        }
        if str_eq(clean, "/api/config") {
            return handle_config(method, body)
        }
        if str_starts_with(clean, "/api/tools/") {
            return handle_tool(clean, method, body)
        }
        if str_starts_with(clean, "/api/dharma") {
            return handle_dharma(clean, method, body)
        }
        if str_starts_with(clean, "/api/nlg") {
            return handle_nlg(clean, method, body)
        }
        if str_starts_with(clean, "/api/memories") {
            return axon_post(clean, body)
        }
        if str_starts_with(clean, "/api/knowledge") {
            return axon_post(clean, body)
        }
        if str_starts_with(clean, "/api/backlog") {
            return axon_post(clean, body)
        }
        if str_starts_with(clean, "/api/artifacts") {
            return axon_post(clean, body)
        }
        if str_starts_with(clean, "/api/projects") {
            return axon_post(clean, body)
        }
        if str_starts_with(clean, "/api/imprints") {
            return axon_post(clean, body)
        }
        return err_404(clean)
    }

    return err_405(method, clean)
}