// Command mesh-delivery-view-tools serves the read tools of the indexer's modules (novox/hq issue 1562): the runtime launches it for a
// call, it reads the indexer's modules bucket through the view's reads (mesh-delivery-indexer.modules) and writes nothing.
// The view is the other program: the indexer serves no tool (ADR 0437 §4).
package main

import (
	"encoding/json"
	"fmt"
	"os"

	stdio "git.novox.be/novox/mesh-sdk/go"
	"mesh-delivery-view/internal/view"
)

// Tools are the read tools over a modules state.
func Tools(r view.Reader) []stdio.Tool {
	return []stdio.Tool{
		{Name: view.ModuleReadTool,
			Description: "What the indexer stored for one module under modules.<module>, as stored: its fingerprint (fp, none), the " +
				"new-form fingerprint (fp2) or why it has none (none2), the inputs it was computed from (inputs2), the module's " +
				"directory (path) and the toolchains it was computed with. Read-only.",
			Input: map[string]any{"type": "object", "required": []string{"module"}, "properties": map[string]any{
				"module": map[string]any{"type": "string", "description": "the module's name"}}},
			Run: func(args map[string]any) (any, error) {
				name, _ := args["module"].(string)
				return r.Module(name)
			}},
		{Name: view.ModulesReadTool,
			Description: "Every module the indexer holds, each as stored under modules.<module>. With none2 true, only the modules " +
				"that have no new-form fingerprint, each with the reason (none2). Read-only.",
			Input: map[string]any{"type": "object", "properties": map[string]any{
				"none2": map[string]any{"type": "boolean", "description": "only the modules without a new-form fingerprint"}}},
			Run: func(args map[string]any) (any, error) {
				only, _ := args["none2"].(bool)
				mods, err := r.Modules(only)
				return map[string]any{"modules": mods}, err
			}},
	}
}

func main() {
	state := stdio.State("mesh-delivery-indexer.modules")
	r := view.Reader{State: view.StateRead{Keys: state.Keys, Get: func(key string) (json.RawMessage, error) {
		e, err := state.Get(key)
		if err != nil || e == nil {
			return nil, err
		}
		return e.Value, nil
	}}}
	if err := stdio.Serve("", Tools(r)); err != nil {
		fmt.Fprintf(os.Stderr, "[mesh-delivery-view-tools] %v\n", err)
		os.Exit(1)
	}
}