package app

import (
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/projectscope"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/server"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/internal/store"
	"git-ssh.u1680832.nyat.app/weichen/Agent-System-Backend.git/pkg/extension"
	core "git-ssh.u1680832.nyat.app/weichen/Agent-System-Core.git"
	"context"
	"errors"
	"sync"
)

type projectLifecycleSlot struct {
	mu       sync.Mutex
	holder   string
	provider *extension.ProjectLifecycle
}

func (r compiledRegistry) RegisterProjectLifecycle(extension.ProjectLifecycle) error {
	return errors.New("extension: declarative plugins cannot register project lifecycle")
}
func (r pluginRegistry) RegisterProjectLifecycle(p extension.ProjectLifecycle) error {
	if r.caps.projects == nil || r.pluginID == "" {
		return errors.New("extension: project lifecycle slot unavailable")
	}
	if p.List == nil || p.Create == nil || p.Rename == nil || p.Archive == nil || p.Work == nil {
		return errors.New("extension: project lifecycle requires all callbacks")
	}
	slot := r.caps.projects
	slot.mu.Lock()
	defer slot.mu.Unlock()
	if slot.provider != nil {
		return errors.New("extension: project lifecycle already registered")
	}
	slot.holder, slot.provider = r.pluginID, &p
	return nil
}
func (r recordRegistry) RegisterProjectLifecycle(p extension.ProjectLifecycle) error {
	reg, ok := r.Registry.(extension.ProjectLifecycleRegistry)
	if !ok {
		return errors.New("extension: project lifecycle registration unavailable")
	}
	return reg.RegisterProjectLifecycle(p)
}
func (slot *projectLifecycleSlot) wire(srv *server.Server, caps hostcaps) {
	slot.mu.Lock()
	defer slot.mu.Unlock()
	if slot.provider == nil {
		return
	}
	holder := slot.holder
	srv.SetProjectLifecycle(*slot.provider, func(owner string) extension.Host {
		return inprocHost{caps: caps, owner: owner, actor: owner, pluginID: holder}
	})
}

func (slot *projectLifecycleSlot) active() bool {
	slot.mu.Lock()
	defer slot.mu.Unlock()
	return slot.provider != nil
}

func (slot *projectLifecycleSlot) work() func(context.Context, string, core.ID) (bool, error) {
	slot.mu.Lock()
	defer slot.mu.Unlock()
	if slot.provider == nil {
		return nil
	}
	return slot.provider.Work
}

func (slot *projectLifecycleSlot) resolve(ctx context.Context, caps hostcaps, owner string, id core.ID) (core.ID, error) {
	slot.mu.Lock()
	if slot.provider == nil {
		slot.mu.Unlock()
		return id, nil
	}
	p, holder := *slot.provider, slot.holder
	slot.mu.Unlock()
	return projectscope.Resolve(ctx, inprocHost{caps: caps, owner: owner, actor: owner, pluginID: holder}, p, id)
}

var _ extension.ProjectHost = inprocHost{}

func (h inprocHost) OwnedProjects() ([]core.Project, error) {
	ps, err := h.caps.st.ListProjects(h.owner)
	for i := range ps {
		ps[i].Owner = h.owner
	}
	return ps, err
}
func (h inprocHost) OwnedProject(id string) (core.Project, error) {
	return h.caps.st.GetProject(h.owner, id)
}
func (h inprocHost) ProjectMetadata(id string) (core.Project, error) {
	p, err := h.caps.st.ProjectMetadata(id)
	if err != nil {
		return core.Project{}, err
	}
	if h.caps.projects != nil && h.caps.projects.active() {
		p.Settings = h.caps.set.MaskedProjectMetadata(p.Settings)
	}
	if p.Owner == h.owner {
		return p, nil
	}
	if h.caps.authz == nil {
		return core.Project{}, store.ErrNotFound
	}
	ok, err := h.caps.authz.AuthorizeResource(extension.ResourceAuthzQuery{Actor: h.owner, Action: "read", ResourceType: "project", ResourceID: core.ID(id), Owner: p.Owner, ProjectID: core.ID(id)})
	if err != nil || !ok {
		return core.Project{}, store.ErrNotFound
	}
	return p, nil
}
func (h inprocHost) EnsureProject(id, name string) (core.Project, error) {
	return h.caps.st.EnsureProject(h.owner, id, name)
}
func (h inprocHost) RenameOwnedProject(id, name string) (core.Project, error) {
	return h.caps.st.RenameOwnedProject(h.owner, id, name)
}
func (h inprocHost) ProjectNameAvailable(name, exceptID string) (bool, error) {
	return h.caps.st.ProjectNameAvailable(name, exceptID)
}