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Merge #2601

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2601: Ease search result pagination r=Kerollmops a=ManyTheFish

# Summary
This PR is a prototype enhancing search results pagination (#2577)

# Todo

- [x] Update the API to return the number of pages and allow users to directly choose a page instead of computing an offset
- [x] Change computation of `total_pages` in order to have an exact count
  - [x] compute query tree exhaustively
  - [x] compute distinct exhaustively

# Small Documentation

## Default search query

**request**:
```sh
curl \
  -X POST 'http://localhost:7700/indexes/movies/search' \
  -H 'Content-Type: application/json' \
  --data-binary '{ "q": "botman" }'
```

**result**:
```json
{
  "hits":[...],
  "query":"botman",
  "processingTimeMs":5,
  "hitsPerPage":20,
  "page":1,
  "totalPages":4,
  "totalHits":66
}
```

## Search query with offset parameter

**request**:
```sh
curl \
  -X POST 'http://localhost:7700/indexes/movies/search' \
  -H 'Content-Type: application/json' \
  --data-binary '{ "q": "botman", "offset": 0 }'
```

**result**:
```json
{
  "hits":[...],
  "query":"botman",
  "processingTimeMs":3,
  "limit":20,
  "offset":0,
  "estimatedTotalHits":66
}
```

## Search query selecting page with page parameter

**request**:
```sh
curl \
  -X POST 'http://localhost:7700/indexes/movies/search' \
  -H 'Content-Type: application/json' \
  --data-binary '{ "q": "botman", "page": 2 }'
```

**result**:
```json
{
  "hits":[...],
  "query":"botman",
  "processingTimeMs":5,
  "hitsPerPage":20,
  "page":2,
  "totalPages":4,
  "totalHits":66
}
```

# Related

fixes #2577

## In charge of the feature

Core: `@ManyTheFish` 
Docs: `@guimachiavelli` 
Integration: `@bidoubiwa` 


Co-authored-by: ManyTheFish <many@meilisearch.com>
This commit is contained in:
bors[bot] 2022-10-26 16:10:58 +00:00 • committed by GitHub
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meilisearch-auth/Cargo.toml
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@ -7,7 +7,7 @@ edition = "2021"
enum-iterator = "1.1.2"
hmac = "0.12.1"
meilisearch-types = { path = "../meilisearch-types" }
milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.33.4", default-features = false }
milli = { git = "https://github.com/meilisearch/milli.git", tag = "v0.34.0", default-features = false }
rand = "0.8.5"
serde = { version = "1.0.145", features = ["derive"] }
serde_json = { version = "1.0.85", features = ["preserve_order"] }