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package task
import (
"encoding/json"
"time"
)
type State string
const (
StatePending State = "PENDING"
StateQueued State = "QUEUED"
StateRunning State = "RUNNING"
StateReady State = "READY"
StateCompleted State = "COMPLETED"
StateFailed State = "FAILED"
StateTimedOut State = "TIMED_OUT"
StateCancelled State = "CANCELLED"
StateBudgetExceeded State = "BUDGET_EXCEEDED"
StateBlocked State = "BLOCKED"
)
type Priority string
const (
PriorityHigh Priority = "high"
PriorityNormal Priority = "normal"
PriorityLow Priority = "low"
)
type AgentConfig struct {
Type string `yaml:"type" json:"type"`
Model string `yaml:"model" json:"model"`
ContextFiles []string `yaml:"context_files" json:"context_files"`
Instructions string `yaml:"instructions" json:"instructions"`
ProjectDir string `yaml:"project_dir" json:"project_dir"`
MaxBudgetUSD float64 `yaml:"max_budget_usd" json:"max_budget_usd"`
PermissionMode string `yaml:"permission_mode" json:"permission_mode"`
AllowedTools []string `yaml:"allowed_tools" json:"allowed_tools"`
DisallowedTools []string `yaml:"disallowed_tools" json:"disallowed_tools"`
SystemPromptAppend string `yaml:"system_prompt_append" json:"system_prompt_append"`
AdditionalArgs []string `yaml:"additional_args" json:"additional_args"`
SkipPlanning bool `yaml:"skip_planning" json:"skip_planning"`
}
// UnmarshalJSON reads project_dir with fallback to legacy working_dir.
func (c *AgentConfig) UnmarshalJSON(data []byte) error {
type Alias AgentConfig
aux := &struct {
ProjectDir string `json:"project_dir"`
WorkingDir string `json:"working_dir"` // legacy
*Alias
}{Alias: (*Alias)(c)}
if err := json.Unmarshal(data, aux); err != nil {
return err
}
if aux.ProjectDir != "" {
c.ProjectDir = aux.ProjectDir
} else {
c.ProjectDir = aux.WorkingDir
}
return nil
}
type RetryConfig struct {
MaxAttempts int `yaml:"max_attempts" json:"max_attempts"`
Backoff string `yaml:"backoff" json:"backoff"` // "linear", "exponential"
}
type Task struct {
ID string `yaml:"id" json:"id"`
ParentTaskID string `yaml:"parent_task_id" json:"parent_task_id"`
Name string `yaml:"name" json:"name"`
Description string `yaml:"description" json:"description"`
Agent AgentConfig `yaml:"agent" json:"agent"`
Claude AgentConfig `yaml:"claude" json:"claude"` // alias for backward compatibility
Timeout Duration `yaml:"timeout" json:"timeout"`
Retry RetryConfig `yaml:"retry" json:"retry"`
Priority Priority `yaml:"priority" json:"priority"`
Tags []string `yaml:"tags" json:"tags"`
DependsOn []string `yaml:"depends_on" json:"depends_on"`
State State `yaml:"-" json:"state"`
RejectionComment string `yaml:"-" json:"rejection_comment,omitempty"`
QuestionJSON string `yaml:"-" json:"question,omitempty"`
CreatedAt time.Time `yaml:"-" json:"created_at"`
UpdatedAt time.Time `yaml:"-" json:"updated_at"`
}
// Duration wraps time.Duration for YAML unmarshaling from strings like "30m".
type Duration struct {
time.Duration
}
func (d *Duration) UnmarshalYAML(unmarshal func(interface{}) error) error {
var s string
if err := unmarshal(&s); err != nil {
return err
}
dur, err := time.ParseDuration(s)
if err != nil {
return err
}
d.Duration = dur
return nil
}
func (d Duration) MarshalYAML() (interface{}, error) {
return d.Duration.String(), nil
}
// BatchFile represents a YAML file containing multiple tasks.
type BatchFile struct {
Tasks []Task `yaml:"tasks"`
}
// ValidTransition returns true if moving from the current state to next is allowed.
func ValidTransition(from, to State) bool {
transitions := map[State][]State{
StatePending: {StateQueued, StateCancelled},
StateQueued: {StateRunning, StateCancelled},
StateRunning: {StateReady, StateCompleted, StateFailed, StateTimedOut, StateCancelled, StateBudgetExceeded, StateBlocked},
StateReady: {StateCompleted, StatePending},
StateFailed: {StateQueued}, // retry
StateTimedOut: {StateQueued}, // retry
StateCancelled: {StateQueued}, // restart
StateBudgetExceeded: {StateQueued}, // retry
StateBlocked: {StateQueued, StateReady}, // answer received → re-queue as resume execution
}
for _, allowed := range transitions[from] {
if allowed == to {
return true
}
}
return false
}
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