package tools

import (
	"context"
	"encoding/json"
	"fmt"

	"gitea.d-ma.be/mathias/gitea-mcp/internal/allowlist"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/gitea"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/registry"
)

type RepoDelete struct {
	c *gitea.Client
	a *allowlist.Allowlist
}

func NewRepoDelete(c *gitea.Client, a *allowlist.Allowlist) *RepoDelete {
	return &RepoDelete{c: c, a: a}
}

func (t *RepoDelete) Descriptor() registry.ToolDescriptor {
	return registry.ToolDescriptor{
		Name:        "repo_delete",
		Description: "Permanently delete a repository. Requires confirm=<repo name> to prevent accidents.",
		InputSchema: json.RawMessage(`{
			"type":"object",
			"properties":{
				"owner":{"type":"string"},
				"name":{"type":"string"},
				"confirm":{"type":"string","description":"Must equal the repo name exactly to proceed."}
			},
			"required":["owner","name","confirm"]
		}`),
	}
}

type repoDeleteArgs struct {
	Owner   string `json:"owner"`
	Name    string `json:"name"`
	Confirm string `json:"confirm"`
}

func (t *RepoDelete) Call(ctx context.Context, raw json.RawMessage) (json.RawMessage, error) {
	var args repoDeleteArgs
	if err := parseArgs(raw, &args); err != nil {
		return nil, err
	}
	if err := t.a.Check(args.Owner); err != nil {
		return nil, err
	}
	if args.Confirm != args.Name {
		return nil, fmt.Errorf("repo_delete requires confirm=%q to match the repo name — got %q", args.Name, args.Confirm)
	}
	if err := t.c.DeleteRepo(ctx, args.Owner, args.Name); err != nil {
		return nil, err
	}
	return textOK(map[string]string{"status": "deleted", "repo": args.Owner + "/" + args.Name})
}