v1

type CFConfig struct {
	Handle          string   `yaml:"handle" json:"handle"`
	DefaultLanguage string   `yaml:"defaultLanguage" json:"defaultLanguage"`
	PreferredTags   []string `yaml:"preferredTags,omitempty" json:"preferredTags,omitempty"`
}

type DailyProgress struct {
	Date      string   `yaml:"date" json:"date"` // YYYY-MM-DD
	Solved    int      `yaml:"solved" json:"solved"`
	Attempted int      `yaml:"attempted" json:"attempted"`
	Problems  []string `yaml:"problems" json:"problems"`   // Problem IDs
	TimeSpent int      `yaml:"timeSpent" json:"timeSpent"` // seconds
}

type PathConfig struct {
	Problems    string `yaml:"problems" json:"problems"`
	Templates   string `yaml:"templates" json:"templates"`
	Submissions string `yaml:"submissions" json:"submissions"`
	Stats       string `yaml:"stats" json:"stats"`
}

type PracticeConfig struct {
	DifficultyMin int `yaml:"difficultyMin" json:"difficultyMin"`
	DifficultyMax int `yaml:"difficultyMax" json:"difficultyMax"`
	DailyGoal     int `yaml:"dailyGoal" json:"dailyGoal"`
	WeeklyGoal    int `yaml:"weeklyGoal,omitempty" json:"weeklyGoal,omitempty"`
}

type PracticeData struct {
	Status         PracticeStatus `yaml:"status" json:"status"`
	FirstAttempt   *time.Time     `yaml:"firstAttempt,omitempty" json:"firstAttempt,omitempty"`
	SolvedAt       *time.Time     `yaml:"solvedAt,omitempty" json:"solvedAt,omitempty"`
	AttemptCount   int            `yaml:"attemptCount" json:"attemptCount"`
	BestSubmission *int64         `yaml:"bestSubmission,omitempty" json:"bestSubmission,omitempty"`
	TimeSpent      int            `yaml:"timeSpent,omitempty" json:"timeSpent,omitempty"` // seconds
}

type PracticeStatus string

type Problem struct {
	Schema schema.SchemaHeader `yaml:"_schema" json:"_schema"`

	// Identity
	ID        string `yaml:"id" json:"id"`               // e.g., "1325A"
	Platform  string `yaml:"platform" json:"platform"`   // "codeforces"
	ContestID int    `yaml:"contestId" json:"contestId"` // e.g., 1325
	Index     string `yaml:"index" json:"index"`         // e.g., "A"

	// Basic info
	Name string `yaml:"name" json:"name"`
	URL  string `yaml:"url" json:"url"`

	// Metadata from platform
	Metadata ProblemMetadata `yaml:"metadata" json:"metadata"`

	// Constraints
	Limits ProblemLimits `yaml:"limits" json:"limits"`

	// Sample test cases
	Samples []Sample `yaml:"samples" json:"samples"`

	// User practice data
	Practice PracticeData `yaml:"practice" json:"practice"`

	// User notes
	Notes UserNotes `yaml:"notes,omitempty" json:"notes,omitempty"`

	// Fetch metadata
	FetchedAt   time.Time `yaml:"fetchedAt" json:"fetchedAt"`
	FetchMethod string    `yaml:"fetchMethod" json:"fetchMethod"` // "api", "web", "cache"
}

type ProblemLimits struct {
	TimeLimit   string `yaml:"timeLimit" json:"timeLimit"`
	MemoryLimit string `yaml:"memoryLimit" json:"memoryLimit"`
	InputType   string `yaml:"inputType" json:"inputType"`   // "standard input" or filename
	OutputType  string `yaml:"outputType" json:"outputType"` // "standard output" or filename
}

type ProblemMetadata struct {
	Rating      int      `yaml:"rating" json:"rating"`
	Tags        []string `yaml:"tags" json:"tags"`
	SolvedCount int      `yaml:"solvedCount,omitempty" json:"solvedCount,omitempty"`
}

type Progress struct {
	Schema schema.SchemaHeader `yaml:"_schema" json:"_schema"`

	// Lifetime stats
	TotalSolved    int `yaml:"totalSolved" json:"totalSolved"`
	TotalAttempted int `yaml:"totalAttempted" json:"totalAttempted"`
	TotalTime      int `yaml:"totalTime" json:"totalTime"` // seconds

	// Rating distribution of solved problems
	RatingDistribution map[string]int `yaml:"ratingDistribution" json:"ratingDistribution"`

	// Tag distribution
	TagDistribution map[string]int `yaml:"tagDistribution" json:"tagDistribution"`

	// Streak tracking
	CurrentStreak int        `yaml:"currentStreak" json:"currentStreak"`
	LongestStreak int        `yaml:"longestStreak" json:"longestStreak"`
	LastActivity  *time.Time `yaml:"lastActivity,omitempty" json:"lastActivity,omitempty"`

	// Daily entries
	Daily []DailyProgress `yaml:"daily,omitempty" json:"daily,omitempty"`
}

type Sample struct {
	Index  int    `yaml:"index" json:"index"`
	Input  string `yaml:"input" json:"input"`
	Output string `yaml:"output" json:"output"`
}

type Submission struct {
	Schema schema.SchemaHeader `yaml:"_schema" json:"_schema"`

	// Identity
	ID        int64  `yaml:"id" json:"id"`
	ProblemID string `yaml:"problemId" json:"problemId"`
	ContestID int    `yaml:"contestId" json:"contestId"`

	// Timestamp
	SubmittedAt time.Time `yaml:"submittedAt" json:"submittedAt"`

	// Submission details
	Language   string `yaml:"language" json:"language"`
	LanguageID int    `yaml:"languageId" json:"languageId"`

	// Result
	Verdict    Verdict `yaml:"verdict" json:"verdict"`
	TimeUsed   string  `yaml:"timeUsed" json:"timeUsed"`
	MemoryUsed string  `yaml:"memoryUsed" json:"memoryUsed"`

	// Source reference
	SourceFile string `yaml:"sourceFile" json:"sourceFile"`
	SourceHash string `yaml:"sourceHash,omitempty" json:"sourceHash,omitempty"`
}

type UserNotes struct {
	Difficulty string   `yaml:"difficulty,omitempty" json:"difficulty,omitempty"` // User perception
	CustomTags []string `yaml:"customTags,omitempty" json:"customTags,omitempty"`
	Approach   string   `yaml:"approach,omitempty" json:"approach,omitempty"`
	Reminder   string   `yaml:"reminder,omitempty" json:"reminder,omitempty"`
	Review     bool     `yaml:"review,omitempty" json:"review,omitempty"`
}

type Verdict string

type Workspace struct {
	Schema schema.SchemaHeader `yaml:"_schema" json:"_schema"`

	// Workspace identity
	Name        string `yaml:"name" json:"name"`
	Description string `yaml:"description,omitempty" json:"description,omitempty"`

	// Timestamps
	CreatedAt time.Time `yaml:"createdAt" json:"createdAt"`
	UpdatedAt time.Time `yaml:"updatedAt" json:"updatedAt"`

	// Platform configuration
	Codeforces CFConfig `yaml:"codeforces" json:"codeforces"`

	// Practice settings
	Practice PracticeConfig `yaml:"practice" json:"practice"`

	// Path configuration
	Paths PathConfig `yaml:"paths" json:"paths"`
}